Ragnvald Mathiesen
Publications
2021
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Wang, Yeqing;
Gao, Jianrong;
Chao, Paul;
Muyanja, Nancy S.;
Mathiesen, Ragnvald;
Shahani, Ashwin J..
(2021)
In-situ evidence for impurity-induced formation of eutectic colonies in an interdendritic liquid.
Materials Letters.
volum 292.
Academic article
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Xu, Yijiang;
Deng, Yun;
Casari, Daniele;
Mathiesen, Ragnvald;
Liu, Xiangfa;
Li, Yanjun.
(2021)
Growth kinetics of primary Si particles in hypereutectic Al-Si alloys under the influence of P inoculation: Experiments and modelling.
Journal of Alloys and Compounds.
volum 854.
Academic article
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Zha, Min;
Zhang, Hongmin;
Jia, Hailong;
Gao, Yipeng;
Jin, Shenbao;
Sha, Gang;
Bjørge, Ruben;
Mathiesen, Ragnvald;
Roven, Hans Jørgen;
Wang, Hui-Yuan;
Li, Yanjun.
(2021)
Prominent role of multi-scale microstructural heterogeneities on superplastic deformation of a high solid solution Al–7Mg alloy.
International journal of plasticity.
volum 146.
Academic article
2020
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Feng, Shikang;
Liotti, Enzo;
Lui, Andrew;
Wilson, Matthew D.;
Connolley, Thomas;
Mathiesen, Ragnvald;
Grant, P. S..
(2020)
In-situ X-ray radiography of primary Fe-rich intermetallic compound formation.
Acta Materialia.
volum 196.
Academic article
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Ormstrup, Jeppe;
Østergaard, Emil V.;
Detlefs, Carsten;
Mathiesen, Ragnvald;
Yildirim, Can;
Kutsal, Mustafacan;
Cook, Philip K.;
Watier, Yves;
Cosculluela, Carlos;
Simons, Hugh.
(2020)
Imaging microstructural dynamics and strain fields in electro-active materials in situ with dark field x-ray microscopy.
Review of Scientific Instruments.
volum 91 (6).
Academic article
-
Xu, Yijiang;
Deng, Yun;
Casari, Daniele;
Mathiesen, Ragnvald;
Li, Yanjun.
(2020)
In-situ X-radiographic study of nucleation and growth behaviour of primary silicon particles during solidification of a hypereutectic Al-Si alloy.
Journal of Alloys and Compounds.
volum 832.
Academic article
-
Xu, Yijiang;
Deng, Yun;
Casari, Daniele;
Mathiesen, Ragnvald;
Liu, Xiangfa;
Li, Yanjun.
(2020)
Revealing the nucleation kinetics of primary Si particles in hypereutectic Al-Si alloys under the influence of P inoculation.
Journal of Materials Science.
volum 55 (32).
Academic article
2019
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Falch, Ken Vidar;
Detlefs, Carsten;
Christensen, Magnus Sebastian;
Paganin, David;
Mathiesen, Ragnvald.
(2019)
Experimental investigation of Gaussian random phase screen model for x-ray diffusers.
Optics Express.
volum 27 (15).
Academic article
-
Mirihanage, Wajira;
Falch, Ken Vidar;
Casari, Daniele;
McFadden, Shaun;
Browne, David J.;
Snigireva, I.;
Snigirev, Anatoly;
Li, Yanjun;
Mathiesen, Ragnvald.
(2019)
Non-steady 3D dendrite tip growth under diffusive and weakly convective conditions.
Materialia.
volum 5.
Academic article
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Olofsson, Jakob;
Salomonsson, Kent;
Dahle, Arne K.;
Mathiesen, Ragnvald.
(2019)
Three-dimensional study of nodule clustering and heterogeneous strain localization for tailored material properties in ductile iron.
IOP Conference Series: Materials Science and Engineering.
volum 529 (1).
Academic article
-
Xu, Yijiang;
Casari, Daniele;
Mathiesen, Ragnvald;
Li, Yanjun.
(2019)
Revealing the Heterogeneous Nucleation and Growth Behaviour of Grains in Inoculated Aluminium Alloys During Solidification.
The Minerals, Metals & Materials Series.
Academic article
-
Zhang, Qiuyuan;
Polikarpov, Maxim;
Nataliya, Klimova;
Larsen, Helge Bøvik;
Mathiesen, Ragnvald;
Emerich, Hermann;
Thorkildsen, Gunnar;
Snigireva, Irina;
Snigirev, Anatoly.
(2019)
Investigation of glitches induced by single-crystal diamond compound refractive lenses based on crystal orientation.
AIP Conference Proceedings.
volum 2054 (1).
Academic article
2018
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Aucott, Lee;
Dong, Hongbiao;
Mirihanage, Wajira;
Atwood, Robert;
Kidess, Anton;
Gao, Shian;
Wen, Shuwen;
Marsden, John;
Feng, Shuo;
Tong, Mingming;
Connolley, Thomas;
Drakopoulos, Michael;
Kleijn, Chris R.;
Richardson, Ian M.;
Browne, David J.;
Mathiesen, Ragnvald;
Atkinson, Helen V..
(2018)
Revealing internal flow behaviour in arc welding and additive manufacturing of metals.
Nature Communications.
volum 9.
Academic article
-
Falch, Ken Vidar;
Detlefs, Carsten;
Snigirev, Anatoly;
Mathiesen, Ragnvald.
(2018)
Analytical transmission cross-coefficients for pink beam X-ray microscopy based on compound refractive lenses.
Ultramicroscopy.
volum 184 (B).
Academic article
-
Falch, Ken Vidar;
Lyubormiskiy, Mikhail;
Casari, Daniele;
Snigirev, Anatoly;
Snigireva, Irina;
Detlefs, Carsten;
Di Michiel, Marco;
Lyatun, Ivan;
Mathiesen, Ragnvald.
(2018)
Zernike phase contrast in high-energy x-ray transmission microscopy based on refractive optics.
Ultramicroscopy.
volum 184 (A).
Academic article
-
Xu, Yijiang;
Casari, Daniele;
Mathiesen, Ragnvald;
Li, Yanjun.
(2018)
Revealing the heterogeneous nucleation behavior of equiaxed grains of inoculated Al alloys during directional solidification.
Acta Materialia.
volum 149.
Academic article
-
Zha, Min;
Yu, Zhi-Yuan;
Qian, Feng;
Wang, Huiyuan;
Li, Yanjun;
Mathiesen, Ragnvald;
Roven, Hans Jørgen.
(2018)
Achieving dispersed fine soft Bi particles and grain refinement in a hypermonotectic Al–Bi alloy by severe plastic deformation and annealing.
Scripta Materialia.
volum 155.
Academic article
-
Zhang, Qiuyuan;
Polikarpov, Maxim;
Klimova, Nataliya;
Larsen, Helge Bøvik;
Mathiesen, Ragnvald;
Emerich, Hermann;
Thorkildsen, Gunnar;
Snigireva, Irina;
Snigirev, Anatoly.
(2018)
Investigation of `glitches' in the energy spectrum induced by single-crystal diamond compound X-ray refractive lenses.
Journal of Synchrotron Radiation.
volum 26.
Academic article
2017
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Bjurenstedt, Anton;
Casari, Daniele;
Seifeddine, Salem;
Mathiesen, Ragnvald;
Dahle, Arne Kristian.
(2017)
In-situ study of morphology and growth of primary alpha-Al(FeMnCr)Si intermetallics in an Al-Si alloy.
Acta Materialia.
volum 130.
Academic article
-
Browne, David J.;
García-Moreno, Francisco;
Nguyen-Thi, Henri;
Zimmermann, Gerhard;
Kargl, Florian;
Mathiesen, Ragnvald;
Griesche, Axel;
Minster, Olivier.
(2017)
Overview of in situ X-Ray studies of light alloy solidification in microgravity.
The Minerals, Metals & Materials Series.
volum Part XII.
Academic article
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Casari, Daniele;
Mirihanage, Wajira;
Falch, Ken Vidar;
Ringdalen, Inga Gudem;
Friis, Jesper;
Schmid-Fetzer, Rainer;
Zhao, Dongdong;
Li, Yanjun;
Sillekens, Wim H.;
Mathiesen, Ragnvald.
(2017)
Morphological transition of α-Mg dendrites during near-isothermal solidification of a Mg-Nd-Gd-Zn-Zr casting alloy.
The Minerals, Metals & Materials Series.
volum Part F8.
Academic article
-
Falch, Ken Vidar;
Casari, Daniele;
Di Michiel, Marco;
Detlefs, Carsten;
Snigirev, Anatoly;
Snigireva, Irina;
Honkimäki, Veijo;
Mathiesen, Ragnvald.
(2017)
In situ hard X-ray transmission microscopy for material science.
Journal of Materials Science.
volum 52 (6).
Academic article
-
Jia, Hailong;
Bjørge, Ruben;
Marthinsen, Knut;
Mathiesen, Ragnvald;
Li, Yanjun.
(2017)
Soft particles assisted grain refinement and strengthening of an Al-Bi-Zn alloy subjected to ECAP.
Materials Science & Engineering: A.
volum 703.
Academic article
-
Xu, Yijiang;
Casari, Daniele;
Du, Qiang;
Mathiesen, Ragnvald;
Arnberg, Lars;
Li, Yanjun.
(2017)
Heterogeneous nucleation and grain growth of inoculated aluminium alloys: An integrated study by in-situ X-radiography and numerical modelling.
Acta Materialia.
volum 140.
Academic article
2016
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Casari, Daniele;
Mirihanage, Wajira;
Falch, Ken Vidar;
Ringdalen, Inga Gudem;
Friis, Jesper;
Schmid-Fetzer, Rainer;
Zhao, Dongdong;
Li, Yanjun;
Sillekens, Wim H.;
Mathiesen, Ragnvald.
(2016)
α-Mg primary phase formation and dendritic morphology transition in solidification of a Mg-Nd-Gd-Zn-Zr casting alloy.
Acta Materialia.
volum 116.
Academic article
-
Falch, Ken Vidar;
Detlefs, Carsten;
Di Michiel, Marco;
Snigireva, Irina;
Snigirev, Anatoly;
Mathiesen, Ragnvald.
(2016)
Correcting lateral chromatic aberrations in non-monochromatic X-ray microscopy.
Applied Physics Letters.
volum 109 (5).
Academic article
-
Mathiesen, Ragnvald.
(2016)
Det europeiske superrøntgenanlegget ESRF under oppgradering.
Fra Fysikkens Verden.
volum 78.
Popular scientific article
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Murphy, A.G.;
Browne, DJ;
Houltz, Y;
Mathiesen, Ragnvald.
(2016)
In situ X-ray observations of gas porosity interactions with dendritic microstructures during solidification of Al-based alloys.
IOP Conference Series: Materials Science and Engineering.
volum 117 (1).
Academic article
-
Murphy, Andrew G.;
Mathiesen, Ragnvald;
Houltz, Ylva;
Li, J.;
Lockowandt, C;
Henriksson, K;
Melville, N;
Browne, David J..
(2016)
Direct observation of spatially isothermal equiaxed solidification of an Al–Cu alloy in microgravity onboard the MASER13 sounding rocket.
Journal of Crystal Growth.
volum 454.
Academic article
-
Murphy, Andrew G;
Mathiesen, Ragnvald;
Houltz, Ylva;
Li, J;
Lockowandt, C;
Henriksson, K.J.;
Zimmermann, Gerhard;
Browne, David J.;
Melville, N.
(2016)
XRMON-SOL: Isothermal equiaxed solidification of a grain refined Al-20 wt%Cu alloy.
Journal of Crystal Growth.
volum 440.
Academic article
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Sillekens, W.H.;
Casari, Daniele;
Mirihanage, Wajira U.;
Terzi, S;
Mathiesen, Ragnvald;
Salvo, L;
Daudin, R;
LHUISSIER, P;
Guo, E;
Lee, P. D..
(2016)
The Use of In Situ X-ray Imaging Methods in the Research and Development of Magnesium-Based Grain-Refined and Nanocomposite Materials.
JOM.
volum 68 (12).
Academic article
2015
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Li, Yanjun;
Xu, Yijiang;
Du, Qiang;
Arnberg, Lars;
Mathiesen, Ragnvald.
(2015)
Numerical modelling and in-situ radiographic study of the grain nucleation and growth of inoculated aluminum alloys.
IOP Conference Series: Materials Science and Engineering.
volum 84 (1).
Academic article
-
Mirihanage, Wajira;
Di Michiel, Marco;
Mathiesen, Ragnvald.
(2015)
Ultra-fast in-situ X-ray studies of evolving columnar dendrites in solidifying steel weld pools.
IOP Conference Series: Materials Science and Engineering.
volum 84 (1).
Academic article
-
Mo, Frode;
Mathiesen, Ragnvald;
Beukes, Jon Are;
Vu, Khanh Minh.
(2015)
Rochelle salt - A structural reinvestigation with improved tools. I. the high-temperature paraelectric phase at 308 - K.
IUCrJ.
volum 2 (1).
Academic article
-
Murphy, A. G.;
Mirihanage, Wajira;
Browne, DJ;
Mathiesen, Ragnvald.
(2015)
Equiaxed dendritic solidification and grain refiner potency characterised through in situ X-radiography.
Acta Materialia.
volum 95.
Academic article
-
Reiten, Andreas;
Chernyshov, Dmitry;
Mathiesen, Ragnvald.
(2015)
Nebula: Reconstruction and visualization of scattering data in reciprocal space.
Journal of Applied Crystallography.
volum 48.
Academic article
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Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Bjørge, Ruben;
Roven, Hans Jørgen.
(2015)
High ductility bulk nanostructured Al-Mg binary alloy processed by equal channel angular pressing and inter-pass annealing.
Scripta Materialia.
volum 105.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Bjørge, Ruben;
Roven, Hans Jørgen.
(2015)
Microstructure evolution and mechanical behavior of a binary Al-7Mg alloy processed by equal-channel angular pressing.
Acta Materialia.
volum 84.
Academic article
2014
-
Høydalsvik, Kristin;
Fløystad, Jostein Bø;
Zhao, Tiejun;
Esmaeili, Morteza;
Diaz, Ana;
Andreasen, Jens Wenzel;
Mathiesen, Ragnvald;
Rønning, Magnus;
Breiby, Dag Werner.
(2014)
In situ X-ray ptychography imaging of high-temperature CO2 acceptor particle agglomerates.
Applied Physics Letters.
volum 104 (24).
Academic article
-
Liotti, E;
Lui, A;
Vincent, R.;
Kumar, S;
Guo, Z;
Connolley, T;
Dolbnya, I.P.;
Hart, M;
Arnberg, Lars;
Mathiesen, Ragnvald;
Grant, P. S..
(2014)
A synchrotron X-ray radiography study of dendrite fragmentation induced by a pulsed electromagnetic field in an Al-15Cu alloy.
Acta Materialia.
volum 70.
Academic article
-
Mirihanage, Wajira;
Di Michel, Marco;
Reiten, Andreas;
Arnberg, Lars;
Dong, Hongbiao;
Mathiesen, Ragnvald.
(2014)
Time-resolved X-ray diffraction studies of solidification microstructure evolution in welding.
Acta Materialia.
volum 68.
Academic article
-
Mirihanage, Wajira;
Falch, Ken Vidar;
Snigireva, Irina;
Snigirev, A;
Li, Yanjun;
Arnberg, Lars;
Mathiesen, Ragnvald.
(2014)
Retrieval of three-dimensional spatial information from fast in situ two-dimensional synchrotron radiography of solidification microstructure evolution.
Acta Materialia.
volum 81.
Academic article
-
Nguyen-Thi, Henri;
Reinhart, Guillaume;
Salloum-Abou-Jaoudé, Georges;
Browne, David;
Murphy, Anthony G.;
Houltz, Ylva;
Li, J.;
Voss, Daniela H.;
Verga, Antonio;
Mathiesen, Ragnvald;
Zimmermann, Gerhard.
(2014)
XRMON-GF experiments devoted to the in situ X-ray radiographic observation of growth process in microgravity conditions.
Microgravity, science and technology.
volum 26 (1).
Academic article
-
Salloum-Abou-Jaoude, G;
Nguyen-Thi, H;
Reinhart, G;
Mathiesen, Ragnvald;
Zimmermann, G;
Voss, D.
(2014)
A synchrotron X-ray radiography study of dendrite fragmentation induced by a pulsed electromagnetic field in an Al–15Cu alloy.
Materials Science Forum.
volum 790-791.
Academic article
-
Salloum-Abou-Jaoudé, Georges;
Nguyen-Thi, Henri;
Reinhart, Guillaume;
Mathiesen, Ragnvald;
Zimmermann, Gerhard;
Voss, Daniela H..
(2014)
Characterization of Motion of Dendrite Fragment by X-Ray Radiography on Earth and under Microgravity Environment.
Materials Science Forum.
volum 790-791.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Baumgart, Christine;
Roven, Hans Jørgen.
(2014)
Influence on Mg content, grain size and strain rate on mechanical properties and DSA behaviour of Al-Mg alloys processed by ECAP and annealing.
Materials Science Forum.
volum 794-796.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Bjørge, Ruben;
Roven, Hans Jørgen.
(2014)
Achieve high ductility and strength in an Al-Mg alloy by severe plastic deformation combined with inter-pass annealing.
Materials Science & Engineering: A.
volum 598.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Bjørge, Ruben;
Roven, Hans Jørgen.
(2014)
Microstructure, hardness evolution and thermal stability of binary Al-7Mg alloy processed by ECAP with intermediate annealing.
Transactions of Nonferrous Metals Society of China.
volum 24 (7).
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Roven, Hans.
(2014)
Dispersion of soft Bi particles and grain refinement of matrix in an Al-Bi alloy by equal channel angular pressing.
Journal of Alloys and Compounds.
volum 605.
Letter to the editor
2013
-
Brataas, Arne;
Mathiesen, Ragnvald;
Grande, Tor;
Roven, Hans Jørgen;
Grepstad, Jostein;
Echtermeyer, Andreas;
Johnsen, Roy;
Krøkje, Åse.
(2013)
Enabling technologies at NTNU; materials science and engineering.
2013.
Report
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Liotti, E;
Lui, A;
Vincent, R.;
Kumar, S.;
Guo, Z;
Connolley, T;
Hart, M;
Arnberg, Lars;
Mathiesen, Ragnvald;
Grant, P.S..
(2013)
A Synchrotron X-ray Radiography Investigation of Induced Dendrite Fragmentation in Al-15wt%Cu.
Materials Science Forum.
volum 765.
Academic article
-
Murphy, A. G.;
Browne, DJ;
Mirihanage, Wajira;
Mathiesen, Ragnvald.
(2013)
Combined in situ X-ray radiographic observations and post-solidification metallographic characterisation of eutectic transformations in Al-Cu alloy systems.
Acta Materialia.
volum 61 (12).
Academic article
-
Nguyen-Thi, H;
Reinhart, G;
Abou Jaoude, G.S.;
Mathiesen, Ragnvald;
Zimmermann, Gerhard;
Houltz, Y;
Voss, D;
Verga, A;
Browne, DJ;
Murphy, A. G..
(2013)
XRMON-GF: A novel facility for solidification of metallic alloys with in situ and time-resolved X-ray radiographic characterization in microgravity conditions.
Journal of Crystal Growth.
volum 374.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Bjørge, Ruben;
Roven, Hans Jørgen.
(2013)
Annealing response of binary Al-7Mg alloy deformed by equal channel angular pressing.
Materials Science & Engineering: A.
volum 586.
Academic article
2012
-
Mathiesen, Ragnvald;
Arnberg, Lars;
Nguyen-Thi, H;
Billia, B.
(2012)
In situ X-ray video microscopy as a tool in solidification science.
JOM.
volum 64 (1).
Academic article
-
Mirihanage, Wajira;
Arnberg, Lars;
Mathiesen, Ragnvald.
(2012)
In-situ observation of transient columnar dendrite growth in the presence of thermo-solutal convection.
IOP Conference Series: Materials Science and Engineering.
volum 33.
Academic article
-
Nguyen-Thi, H;
Salvo, L;
Mathiesen, Ragnvald;
Arnberg, Lars;
Billia, B;
Suery, M;
Reinhart, G.
(2012)
On the interest of synchrotron X-ray imaging for the study of solidification in metallic alloys.
Comptes rendus. Physique.
volum 13 (3).
Academic article
2011
-
Anawati, Ms;
Diplas, Spyridon;
Holme, Børge;
Solberg, Jan Ketil;
Mathiesen, Ragnvald;
Walmsley, John;
Nisancioglu, Kemal.
(2011)
Surface Characterization of Heat Treated AlPbCu Model Alloys.
Journal of the Electrochemical Society.
volum 158 (6).
Academic article
-
Mathiesen, Ragnvald;
Arnberg, Lars;
Li, Yanjun;
Meier, Vivienne;
Schaffer, Paul;
Snigireva, Irina;
Snigirev, Anatoly;
Dahle, Arne Kristian.
(2011)
X-Ray Videomicroscopy Studies of Eutectic Al-Si Solidification in Al-Si-Cu.
Metallurgical and Materials Transactions A.
volum 42A (1).
Academic article
-
Nguyen-Thi, H;
Bogno, A;
Reinhart, G;
Billia, B;
Mathiesen, Ragnvald;
Zimmermann, Gerhard;
Houltz, Y;
Loth, K;
Voss, D;
Verga, A;
de Pascale, F.
(2011)
Investigation of gravity effects on solidification of binary alloys with in situ X-ray radiography on earth and in microgravity environment.
Journal of Physics: Conference Series (JPCS).
volum 327 (012012).
Academic article
-
Rakete, Christoph;
Baumbach, C;
Goldschmidt, A;
Samberg, D;
Schroer, C.G.;
Breede, F;
Stenzel, C;
Zimmermann, Gerhard;
Pickmann, C;
Houltz, Y;
Lockowandt, C;
Svenonius, O;
Wiklund, P;
Mathiesen, Ragnvald.
(2011)
Compact x-ray microradiograph for in situ imaging of solidification processes: Bringing in situ x-ray micro-imaging from the synchrotron to the laboratory.
Review of Scientific Instruments.
volum 82 (10).
Academic article
2010
-
Delaleau, Pierre Patrick;
Beckermann, Christoph;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2010)
Mesoscopic Simulation of Dendritic Growth Observed in X-ray Video Microscopy During Directional Solidification of Al-Cu Alloys.
ISIJ International.
volum 50 (12).
Academic article
-
Li, Yanjun;
Chen, Yongjun;
Walmsley, John;
Dumoulin, Stephane;
Mathiesen, Ragnvald;
Roven, Hans Jørgen.
(2010)
Faceted interfacial structure of {1011} twins in Ti formed during equal channel angular pressing.
Scripta Materialia.
volum 62 (7).
Academic article
-
Mathiesen, Ragnvald;
Arnberg, Lars;
Li, Yanjun;
Snigirev, Anatoly;
Snigireva, Irina;
Dahle, Arne Kristian.
(2010)
X-Ray Video Microscopy Studies of Irregular Eutectic Solidification Microstructures in Al-Si-Cu Alloys.
ISIJ International.
volum 50 (12).
Academic article
-
McFadden, Shaun;
Schaffer, Paul;
Mathiesen, Ragnvald;
Browne, David.
(2010)
Analysis of an Equiaxed Dendrite Growth Model with Comparisons to In-Situ Results of Equiaxed Dendritic Growth in an Al-Ge Alloy.
Materials Science Forum.
volum 654-656.
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2010)
In situ investigations of liquid-liquid phase separation in hypermonotectic alloys.
Materials Science Forum.
volum 649.
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2010)
In-situ Investigation of Liquid-Liquid Phase Separation in Hypermonotectic Alloys.
Materials Science Forum.
volum 649.
Academic article
-
Walmsley, John;
Albertsen, Jorun Zahl;
Friis, Jesper;
Mathiesen, Ragnvald.
(2010)
The evolution and oxidation of carbides in an Alloy 601 exposed to long term high temperature corrosion conditions.
Corrosion Science.
volum 52 (12).
Academic article
-
Zimmermann, Gerhard;
Hecht, Ulrike;
Mathes, Michael;
Mathiesen, Ragnvald.
(2010)
Time resolved X-ray imaging of eutectic cellular patterns evolving during solidification of ternary Al-Cu-Ag alloys.
International Journal of Materials Research - Zeitschrift für Metallkunde.
volum 101 (12).
Academic article
2009
-
Delaleau, Pierre;
Mathiesen, Ragnvald;
Schaffer, Paul;
Arnberg, Lars.
(2009)
Impact of buoyancy on the growth of equiaxed grains in Al-Cu.
International Journal of Cast Metals Research.
volum 22 (1-4).
Academic article
-
Ruvalcaba, Demian;
Eskin, Dmitry;
Mathiesen, Ragnvald;
Arnberg, Lars;
Katgerman, Laurens.
(2009)
Influence of dendrite arrangement on coarsening during solidification of high-solute Al alloys.
International Journal of Cast Metals Research.
volum 22 (1-4).
Academic article
-
Ruvalcaba, Demian;
Mathiesen, Ragnvald;
Eskin, Dmitry;
Arnberg, Lars;
Katgerman, Laurens.
(2009)
In-situ analysis of coarsening during directional solidification experiments in high-solute aluminium alloys.
Metallurgical and Materials Transactions B.
volum 40 (3).
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2009)
L2 droplet interaction with alpha-Al during solidification of hypermonotectic Al–8 wt.% Bi alloys.
Acta Materialia.
volum 57 (10).
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2009)
Liquid decomposition, droplet coagulation and droplet-interface interactions in hypermonotectic Al-Bi alloys.
Transactions of the Indian Institute of Metals.
volum 62 (4-5).
Academic article
-
Tucho, Wakshum Mekonnen;
Venvik, Hilde Johnsen;
Walmsley, John C;
Stange, M;
Ramachandran, Amutha;
Mathiesen, Ragnvald;
Borg, Anne;
Bredesen, R;
Holmestad, Randi.
(2009)
Microstructural studies of self-supported (1.5-10 mu m) Pd/23 wt% Ag hydrogen separation membranes subjected to different heat treatments.
Journal of Materials Science.
volum 44 (16).
Academic article
2008
-
Albertsen, Jorun Zahl;
Grong, Øystein;
Walmsley, John C;
Mathiesen, Ragnvald;
Beek, W.J..
(2008)
A Model for High-Temperature Pitting Corrosion in Nickel-Based Alloys Involving Internal Precipitation of Carbides, Oxides and Graphite.
Metallurgical and Materials Transactions A.
volum 39.
Academic article
-
Forbord, Børge;
Mathiesen, Ragnvald;
Mårdalen, Jostein;
Furu, Trond;
Lange, Hans Iver.
(2008)
Elastic strain and texture evolution during tensile testing of peak-hardened Al-Mg-Si-profiles.
Materials Science & Engineering: A.
volum 479 (1-2).
Academic article
-
Larsen, Magnus Hurlen;
Walmsley, John C;
Lunder, Otto;
Mathiesen, Ragnvald;
Nisancioglu, Kemal.
(2008)
Intergranular corrosion of copper-containing AA6xxx AlMgSi aluminum alloys.
Journal of the Electrochemical Society.
volum 155 (11).
Academic article
-
Mathiesen, Ragnvald;
Arnberg, Lars.
(2008)
X-Ray Imaging of Solidification Processes and Microstructure Evolution.
ASM Handbook, volume 15, Casting.
Academic chapter/article/Conference paper
-
Ratke, Lorenz;
Gandin, Charles Andre;
Mathiesen, Ragnvald;
Rappaz, Michel;
Rex, Stephan.
(2008)
Materials Solidification Physics in Space.
EurophysicsNews.
volum 39 (5).
Article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars;
Di Sabatino, Marisa;
Snigirev, Anatoly.
(2008)
In situ investigation of spinodal decomposition in hypermonotectic Al–Bi and Al–Bi–Zn alloys.
New Journal of Physics.
volum 10.
Academic article
2007
-
Walmsley, John C;
Sævik, Øystein;
Graver, Brit Kathrine F;
Mathiesen, Ragnvald;
Yu, Yingda;
Nisancioglu, Kemal.
(2007)
Nature of Segregated Lead on Electrochemically Active AlPb Alloy.
Journal of the Electrochemical Society.
volum 154 (1).
Academic article
2005
-
Mathiesen, Ragnvald;
Arnberg, Lars.
(2005)
Stray crystal formation in Al-20wt.% Cu studied by synchrotron X-ray video microscopy.
Materials Science & Engineering: A.
volum 413-414.
Academic article
-
Thorkildsen, Gunnar;
Weckert, Edgar;
Mo, Frode;
Larsen, Helge Bøvik;
Mathiesen, Ragnvald.
(2005)
Three-beam resonant X-ray diffraction in germanium - Laue transmission cases.
Acta Crystallographica Section A: Foundations of Crystallography.
volum 61.
Academic article
2004
-
Birkedal, H;
Madsen, Dennis;
Mathiesen, Ragnvald;
Knudsen, K;
Weber, HP;
Pattison, P;
Schwarzenbach, D;
Mathiesen, r*.
(2004)
The charge density of urea from synchrotron diffraction data.
Acta Crystallographica Section A: Foundations of Crystallography.
volum 60.
Academic article
1998
-
Mathiesen, Ragnvald;
Mo, Frode;
Eikenes, Anders;
Nyborg, Tanja;
Larsen, Helge B.;
Authier, Andre.
(1998)
Existence of Two Crystal Structures of the Complex alpha-D-Glucose NaCl H_2O (2:1:1) Verified by Three-Beam Diffraction Experiments.
?.
volum A54.
Academic article
Journal publications
-
Wang, Yeqing;
Gao, Jianrong;
Chao, Paul;
Muyanja, Nancy S.;
Mathiesen, Ragnvald;
Shahani, Ashwin J..
(2021)
In-situ evidence for impurity-induced formation of eutectic colonies in an interdendritic liquid.
Materials Letters.
volum 292.
Academic article
-
Xu, Yijiang;
Deng, Yun;
Casari, Daniele;
Mathiesen, Ragnvald;
Liu, Xiangfa;
Li, Yanjun.
(2021)
Growth kinetics of primary Si particles in hypereutectic Al-Si alloys under the influence of P inoculation: Experiments and modelling.
Journal of Alloys and Compounds.
volum 854.
Academic article
-
Zha, Min;
Zhang, Hongmin;
Jia, Hailong;
Gao, Yipeng;
Jin, Shenbao;
Sha, Gang;
Bjørge, Ruben;
Mathiesen, Ragnvald;
Roven, Hans Jørgen;
Wang, Hui-Yuan;
Li, Yanjun.
(2021)
Prominent role of multi-scale microstructural heterogeneities on superplastic deformation of a high solid solution Al–7Mg alloy.
International journal of plasticity.
volum 146.
Academic article
-
Feng, Shikang;
Liotti, Enzo;
Lui, Andrew;
Wilson, Matthew D.;
Connolley, Thomas;
Mathiesen, Ragnvald;
Grant, P. S..
(2020)
In-situ X-ray radiography of primary Fe-rich intermetallic compound formation.
Acta Materialia.
volum 196.
Academic article
-
Ormstrup, Jeppe;
Østergaard, Emil V.;
Detlefs, Carsten;
Mathiesen, Ragnvald;
Yildirim, Can;
Kutsal, Mustafacan;
Cook, Philip K.;
Watier, Yves;
Cosculluela, Carlos;
Simons, Hugh.
(2020)
Imaging microstructural dynamics and strain fields in electro-active materials in situ with dark field x-ray microscopy.
Review of Scientific Instruments.
volum 91 (6).
Academic article
-
Xu, Yijiang;
Deng, Yun;
Casari, Daniele;
Mathiesen, Ragnvald;
Li, Yanjun.
(2020)
In-situ X-radiographic study of nucleation and growth behaviour of primary silicon particles during solidification of a hypereutectic Al-Si alloy.
Journal of Alloys and Compounds.
volum 832.
Academic article
-
Xu, Yijiang;
Deng, Yun;
Casari, Daniele;
Mathiesen, Ragnvald;
Liu, Xiangfa;
Li, Yanjun.
(2020)
Revealing the nucleation kinetics of primary Si particles in hypereutectic Al-Si alloys under the influence of P inoculation.
Journal of Materials Science.
volum 55 (32).
Academic article
-
Falch, Ken Vidar;
Detlefs, Carsten;
Christensen, Magnus Sebastian;
Paganin, David;
Mathiesen, Ragnvald.
(2019)
Experimental investigation of Gaussian random phase screen model for x-ray diffusers.
Optics Express.
volum 27 (15).
Academic article
-
Mirihanage, Wajira;
Falch, Ken Vidar;
Casari, Daniele;
McFadden, Shaun;
Browne, David J.;
Snigireva, I.;
Snigirev, Anatoly;
Li, Yanjun;
Mathiesen, Ragnvald.
(2019)
Non-steady 3D dendrite tip growth under diffusive and weakly convective conditions.
Materialia.
volum 5.
Academic article
-
Olofsson, Jakob;
Salomonsson, Kent;
Dahle, Arne K.;
Mathiesen, Ragnvald.
(2019)
Three-dimensional study of nodule clustering and heterogeneous strain localization for tailored material properties in ductile iron.
IOP Conference Series: Materials Science and Engineering.
volum 529 (1).
Academic article
-
Xu, Yijiang;
Casari, Daniele;
Mathiesen, Ragnvald;
Li, Yanjun.
(2019)
Revealing the Heterogeneous Nucleation and Growth Behaviour of Grains in Inoculated Aluminium Alloys During Solidification.
The Minerals, Metals & Materials Series.
Academic article
-
Zhang, Qiuyuan;
Polikarpov, Maxim;
Nataliya, Klimova;
Larsen, Helge Bøvik;
Mathiesen, Ragnvald;
Emerich, Hermann;
Thorkildsen, Gunnar;
Snigireva, Irina;
Snigirev, Anatoly.
(2019)
Investigation of glitches induced by single-crystal diamond compound refractive lenses based on crystal orientation.
AIP Conference Proceedings.
volum 2054 (1).
Academic article
-
Aucott, Lee;
Dong, Hongbiao;
Mirihanage, Wajira;
Atwood, Robert;
Kidess, Anton;
Gao, Shian;
Wen, Shuwen;
Marsden, John;
Feng, Shuo;
Tong, Mingming;
Connolley, Thomas;
Drakopoulos, Michael;
Kleijn, Chris R.;
Richardson, Ian M.;
Browne, David J.;
Mathiesen, Ragnvald;
Atkinson, Helen V..
(2018)
Revealing internal flow behaviour in arc welding and additive manufacturing of metals.
Nature Communications.
volum 9.
Academic article
-
Falch, Ken Vidar;
Detlefs, Carsten;
Snigirev, Anatoly;
Mathiesen, Ragnvald.
(2018)
Analytical transmission cross-coefficients for pink beam X-ray microscopy based on compound refractive lenses.
Ultramicroscopy.
volum 184 (B).
Academic article
-
Falch, Ken Vidar;
Lyubormiskiy, Mikhail;
Casari, Daniele;
Snigirev, Anatoly;
Snigireva, Irina;
Detlefs, Carsten;
Di Michiel, Marco;
Lyatun, Ivan;
Mathiesen, Ragnvald.
(2018)
Zernike phase contrast in high-energy x-ray transmission microscopy based on refractive optics.
Ultramicroscopy.
volum 184 (A).
Academic article
-
Xu, Yijiang;
Casari, Daniele;
Mathiesen, Ragnvald;
Li, Yanjun.
(2018)
Revealing the heterogeneous nucleation behavior of equiaxed grains of inoculated Al alloys during directional solidification.
Acta Materialia.
volum 149.
Academic article
-
Zha, Min;
Yu, Zhi-Yuan;
Qian, Feng;
Wang, Huiyuan;
Li, Yanjun;
Mathiesen, Ragnvald;
Roven, Hans Jørgen.
(2018)
Achieving dispersed fine soft Bi particles and grain refinement in a hypermonotectic Al–Bi alloy by severe plastic deformation and annealing.
Scripta Materialia.
volum 155.
Academic article
-
Zhang, Qiuyuan;
Polikarpov, Maxim;
Klimova, Nataliya;
Larsen, Helge Bøvik;
Mathiesen, Ragnvald;
Emerich, Hermann;
Thorkildsen, Gunnar;
Snigireva, Irina;
Snigirev, Anatoly.
(2018)
Investigation of `glitches' in the energy spectrum induced by single-crystal diamond compound X-ray refractive lenses.
Journal of Synchrotron Radiation.
volum 26.
Academic article
-
Bjurenstedt, Anton;
Casari, Daniele;
Seifeddine, Salem;
Mathiesen, Ragnvald;
Dahle, Arne Kristian.
(2017)
In-situ study of morphology and growth of primary alpha-Al(FeMnCr)Si intermetallics in an Al-Si alloy.
Acta Materialia.
volum 130.
Academic article
-
Browne, David J.;
García-Moreno, Francisco;
Nguyen-Thi, Henri;
Zimmermann, Gerhard;
Kargl, Florian;
Mathiesen, Ragnvald;
Griesche, Axel;
Minster, Olivier.
(2017)
Overview of in situ X-Ray studies of light alloy solidification in microgravity.
The Minerals, Metals & Materials Series.
volum Part XII.
Academic article
-
Casari, Daniele;
Mirihanage, Wajira;
Falch, Ken Vidar;
Ringdalen, Inga Gudem;
Friis, Jesper;
Schmid-Fetzer, Rainer;
Zhao, Dongdong;
Li, Yanjun;
Sillekens, Wim H.;
Mathiesen, Ragnvald.
(2017)
Morphological transition of α-Mg dendrites during near-isothermal solidification of a Mg-Nd-Gd-Zn-Zr casting alloy.
The Minerals, Metals & Materials Series.
volum Part F8.
Academic article
-
Falch, Ken Vidar;
Casari, Daniele;
Di Michiel, Marco;
Detlefs, Carsten;
Snigirev, Anatoly;
Snigireva, Irina;
Honkimäki, Veijo;
Mathiesen, Ragnvald.
(2017)
In situ hard X-ray transmission microscopy for material science.
Journal of Materials Science.
volum 52 (6).
Academic article
-
Jia, Hailong;
Bjørge, Ruben;
Marthinsen, Knut;
Mathiesen, Ragnvald;
Li, Yanjun.
(2017)
Soft particles assisted grain refinement and strengthening of an Al-Bi-Zn alloy subjected to ECAP.
Materials Science & Engineering: A.
volum 703.
Academic article
-
Xu, Yijiang;
Casari, Daniele;
Du, Qiang;
Mathiesen, Ragnvald;
Arnberg, Lars;
Li, Yanjun.
(2017)
Heterogeneous nucleation and grain growth of inoculated aluminium alloys: An integrated study by in-situ X-radiography and numerical modelling.
Acta Materialia.
volum 140.
Academic article
-
Casari, Daniele;
Mirihanage, Wajira;
Falch, Ken Vidar;
Ringdalen, Inga Gudem;
Friis, Jesper;
Schmid-Fetzer, Rainer;
Zhao, Dongdong;
Li, Yanjun;
Sillekens, Wim H.;
Mathiesen, Ragnvald.
(2016)
α-Mg primary phase formation and dendritic morphology transition in solidification of a Mg-Nd-Gd-Zn-Zr casting alloy.
Acta Materialia.
volum 116.
Academic article
-
Falch, Ken Vidar;
Detlefs, Carsten;
Di Michiel, Marco;
Snigireva, Irina;
Snigirev, Anatoly;
Mathiesen, Ragnvald.
(2016)
Correcting lateral chromatic aberrations in non-monochromatic X-ray microscopy.
Applied Physics Letters.
volum 109 (5).
Academic article
-
Mathiesen, Ragnvald.
(2016)
Det europeiske superrøntgenanlegget ESRF under oppgradering.
Fra Fysikkens Verden.
volum 78.
Popular scientific article
-
Murphy, A.G.;
Browne, DJ;
Houltz, Y;
Mathiesen, Ragnvald.
(2016)
In situ X-ray observations of gas porosity interactions with dendritic microstructures during solidification of Al-based alloys.
IOP Conference Series: Materials Science and Engineering.
volum 117 (1).
Academic article
-
Murphy, Andrew G.;
Mathiesen, Ragnvald;
Houltz, Ylva;
Li, J.;
Lockowandt, C;
Henriksson, K;
Melville, N;
Browne, David J..
(2016)
Direct observation of spatially isothermal equiaxed solidification of an Al–Cu alloy in microgravity onboard the MASER13 sounding rocket.
Journal of Crystal Growth.
volum 454.
Academic article
-
Murphy, Andrew G;
Mathiesen, Ragnvald;
Houltz, Ylva;
Li, J;
Lockowandt, C;
Henriksson, K.J.;
Zimmermann, Gerhard;
Browne, David J.;
Melville, N.
(2016)
XRMON-SOL: Isothermal equiaxed solidification of a grain refined Al-20 wt%Cu alloy.
Journal of Crystal Growth.
volum 440.
Academic article
-
Sillekens, W.H.;
Casari, Daniele;
Mirihanage, Wajira U.;
Terzi, S;
Mathiesen, Ragnvald;
Salvo, L;
Daudin, R;
LHUISSIER, P;
Guo, E;
Lee, P. D..
(2016)
The Use of In Situ X-ray Imaging Methods in the Research and Development of Magnesium-Based Grain-Refined and Nanocomposite Materials.
JOM.
volum 68 (12).
Academic article
-
Li, Yanjun;
Xu, Yijiang;
Du, Qiang;
Arnberg, Lars;
Mathiesen, Ragnvald.
(2015)
Numerical modelling and in-situ radiographic study of the grain nucleation and growth of inoculated aluminum alloys.
IOP Conference Series: Materials Science and Engineering.
volum 84 (1).
Academic article
-
Mirihanage, Wajira;
Di Michiel, Marco;
Mathiesen, Ragnvald.
(2015)
Ultra-fast in-situ X-ray studies of evolving columnar dendrites in solidifying steel weld pools.
IOP Conference Series: Materials Science and Engineering.
volum 84 (1).
Academic article
-
Mo, Frode;
Mathiesen, Ragnvald;
Beukes, Jon Are;
Vu, Khanh Minh.
(2015)
Rochelle salt - A structural reinvestigation with improved tools. I. the high-temperature paraelectric phase at 308 - K.
IUCrJ.
volum 2 (1).
Academic article
-
Murphy, A. G.;
Mirihanage, Wajira;
Browne, DJ;
Mathiesen, Ragnvald.
(2015)
Equiaxed dendritic solidification and grain refiner potency characterised through in situ X-radiography.
Acta Materialia.
volum 95.
Academic article
-
Reiten, Andreas;
Chernyshov, Dmitry;
Mathiesen, Ragnvald.
(2015)
Nebula: Reconstruction and visualization of scattering data in reciprocal space.
Journal of Applied Crystallography.
volum 48.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Bjørge, Ruben;
Roven, Hans Jørgen.
(2015)
High ductility bulk nanostructured Al-Mg binary alloy processed by equal channel angular pressing and inter-pass annealing.
Scripta Materialia.
volum 105.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Bjørge, Ruben;
Roven, Hans Jørgen.
(2015)
Microstructure evolution and mechanical behavior of a binary Al-7Mg alloy processed by equal-channel angular pressing.
Acta Materialia.
volum 84.
Academic article
-
Høydalsvik, Kristin;
Fløystad, Jostein Bø;
Zhao, Tiejun;
Esmaeili, Morteza;
Diaz, Ana;
Andreasen, Jens Wenzel;
Mathiesen, Ragnvald;
Rønning, Magnus;
Breiby, Dag Werner.
(2014)
In situ X-ray ptychography imaging of high-temperature CO2 acceptor particle agglomerates.
Applied Physics Letters.
volum 104 (24).
Academic article
-
Liotti, E;
Lui, A;
Vincent, R.;
Kumar, S;
Guo, Z;
Connolley, T;
Dolbnya, I.P.;
Hart, M;
Arnberg, Lars;
Mathiesen, Ragnvald;
Grant, P. S..
(2014)
A synchrotron X-ray radiography study of dendrite fragmentation induced by a pulsed electromagnetic field in an Al-15Cu alloy.
Acta Materialia.
volum 70.
Academic article
-
Mirihanage, Wajira;
Di Michel, Marco;
Reiten, Andreas;
Arnberg, Lars;
Dong, Hongbiao;
Mathiesen, Ragnvald.
(2014)
Time-resolved X-ray diffraction studies of solidification microstructure evolution in welding.
Acta Materialia.
volum 68.
Academic article
-
Mirihanage, Wajira;
Falch, Ken Vidar;
Snigireva, Irina;
Snigirev, A;
Li, Yanjun;
Arnberg, Lars;
Mathiesen, Ragnvald.
(2014)
Retrieval of three-dimensional spatial information from fast in situ two-dimensional synchrotron radiography of solidification microstructure evolution.
Acta Materialia.
volum 81.
Academic article
-
Nguyen-Thi, Henri;
Reinhart, Guillaume;
Salloum-Abou-Jaoudé, Georges;
Browne, David;
Murphy, Anthony G.;
Houltz, Ylva;
Li, J.;
Voss, Daniela H.;
Verga, Antonio;
Mathiesen, Ragnvald;
Zimmermann, Gerhard.
(2014)
XRMON-GF experiments devoted to the in situ X-ray radiographic observation of growth process in microgravity conditions.
Microgravity, science and technology.
volum 26 (1).
Academic article
-
Salloum-Abou-Jaoude, G;
Nguyen-Thi, H;
Reinhart, G;
Mathiesen, Ragnvald;
Zimmermann, G;
Voss, D.
(2014)
A synchrotron X-ray radiography study of dendrite fragmentation induced by a pulsed electromagnetic field in an Al–15Cu alloy.
Materials Science Forum.
volum 790-791.
Academic article
-
Salloum-Abou-Jaoudé, Georges;
Nguyen-Thi, Henri;
Reinhart, Guillaume;
Mathiesen, Ragnvald;
Zimmermann, Gerhard;
Voss, Daniela H..
(2014)
Characterization of Motion of Dendrite Fragment by X-Ray Radiography on Earth and under Microgravity Environment.
Materials Science Forum.
volum 790-791.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Baumgart, Christine;
Roven, Hans Jørgen.
(2014)
Influence on Mg content, grain size and strain rate on mechanical properties and DSA behaviour of Al-Mg alloys processed by ECAP and annealing.
Materials Science Forum.
volum 794-796.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Bjørge, Ruben;
Roven, Hans Jørgen.
(2014)
Achieve high ductility and strength in an Al-Mg alloy by severe plastic deformation combined with inter-pass annealing.
Materials Science & Engineering: A.
volum 598.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Bjørge, Ruben;
Roven, Hans Jørgen.
(2014)
Microstructure, hardness evolution and thermal stability of binary Al-7Mg alloy processed by ECAP with intermediate annealing.
Transactions of Nonferrous Metals Society of China.
volum 24 (7).
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Roven, Hans.
(2014)
Dispersion of soft Bi particles and grain refinement of matrix in an Al-Bi alloy by equal channel angular pressing.
Journal of Alloys and Compounds.
volum 605.
Letter to the editor
-
Liotti, E;
Lui, A;
Vincent, R.;
Kumar, S.;
Guo, Z;
Connolley, T;
Hart, M;
Arnberg, Lars;
Mathiesen, Ragnvald;
Grant, P.S..
(2013)
A Synchrotron X-ray Radiography Investigation of Induced Dendrite Fragmentation in Al-15wt%Cu.
Materials Science Forum.
volum 765.
Academic article
-
Murphy, A. G.;
Browne, DJ;
Mirihanage, Wajira;
Mathiesen, Ragnvald.
(2013)
Combined in situ X-ray radiographic observations and post-solidification metallographic characterisation of eutectic transformations in Al-Cu alloy systems.
Acta Materialia.
volum 61 (12).
Academic article
-
Nguyen-Thi, H;
Reinhart, G;
Abou Jaoude, G.S.;
Mathiesen, Ragnvald;
Zimmermann, Gerhard;
Houltz, Y;
Voss, D;
Verga, A;
Browne, DJ;
Murphy, A. G..
(2013)
XRMON-GF: A novel facility for solidification of metallic alloys with in situ and time-resolved X-ray radiographic characterization in microgravity conditions.
Journal of Crystal Growth.
volum 374.
Academic article
-
Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Bjørge, Ruben;
Roven, Hans Jørgen.
(2013)
Annealing response of binary Al-7Mg alloy deformed by equal channel angular pressing.
Materials Science & Engineering: A.
volum 586.
Academic article
-
Mathiesen, Ragnvald;
Arnberg, Lars;
Nguyen-Thi, H;
Billia, B.
(2012)
In situ X-ray video microscopy as a tool in solidification science.
JOM.
volum 64 (1).
Academic article
-
Mirihanage, Wajira;
Arnberg, Lars;
Mathiesen, Ragnvald.
(2012)
In-situ observation of transient columnar dendrite growth in the presence of thermo-solutal convection.
IOP Conference Series: Materials Science and Engineering.
volum 33.
Academic article
-
Nguyen-Thi, H;
Salvo, L;
Mathiesen, Ragnvald;
Arnberg, Lars;
Billia, B;
Suery, M;
Reinhart, G.
(2012)
On the interest of synchrotron X-ray imaging for the study of solidification in metallic alloys.
Comptes rendus. Physique.
volum 13 (3).
Academic article
-
Anawati, Ms;
Diplas, Spyridon;
Holme, Børge;
Solberg, Jan Ketil;
Mathiesen, Ragnvald;
Walmsley, John;
Nisancioglu, Kemal.
(2011)
Surface Characterization of Heat Treated AlPbCu Model Alloys.
Journal of the Electrochemical Society.
volum 158 (6).
Academic article
-
Mathiesen, Ragnvald;
Arnberg, Lars;
Li, Yanjun;
Meier, Vivienne;
Schaffer, Paul;
Snigireva, Irina;
Snigirev, Anatoly;
Dahle, Arne Kristian.
(2011)
X-Ray Videomicroscopy Studies of Eutectic Al-Si Solidification in Al-Si-Cu.
Metallurgical and Materials Transactions A.
volum 42A (1).
Academic article
-
Nguyen-Thi, H;
Bogno, A;
Reinhart, G;
Billia, B;
Mathiesen, Ragnvald;
Zimmermann, Gerhard;
Houltz, Y;
Loth, K;
Voss, D;
Verga, A;
de Pascale, F.
(2011)
Investigation of gravity effects on solidification of binary alloys with in situ X-ray radiography on earth and in microgravity environment.
Journal of Physics: Conference Series (JPCS).
volum 327 (012012).
Academic article
-
Rakete, Christoph;
Baumbach, C;
Goldschmidt, A;
Samberg, D;
Schroer, C.G.;
Breede, F;
Stenzel, C;
Zimmermann, Gerhard;
Pickmann, C;
Houltz, Y;
Lockowandt, C;
Svenonius, O;
Wiklund, P;
Mathiesen, Ragnvald.
(2011)
Compact x-ray microradiograph for in situ imaging of solidification processes: Bringing in situ x-ray micro-imaging from the synchrotron to the laboratory.
Review of Scientific Instruments.
volum 82 (10).
Academic article
-
Delaleau, Pierre Patrick;
Beckermann, Christoph;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2010)
Mesoscopic Simulation of Dendritic Growth Observed in X-ray Video Microscopy During Directional Solidification of Al-Cu Alloys.
ISIJ International.
volum 50 (12).
Academic article
-
Li, Yanjun;
Chen, Yongjun;
Walmsley, John;
Dumoulin, Stephane;
Mathiesen, Ragnvald;
Roven, Hans Jørgen.
(2010)
Faceted interfacial structure of {1011} twins in Ti formed during equal channel angular pressing.
Scripta Materialia.
volum 62 (7).
Academic article
-
Mathiesen, Ragnvald;
Arnberg, Lars;
Li, Yanjun;
Snigirev, Anatoly;
Snigireva, Irina;
Dahle, Arne Kristian.
(2010)
X-Ray Video Microscopy Studies of Irregular Eutectic Solidification Microstructures in Al-Si-Cu Alloys.
ISIJ International.
volum 50 (12).
Academic article
-
McFadden, Shaun;
Schaffer, Paul;
Mathiesen, Ragnvald;
Browne, David.
(2010)
Analysis of an Equiaxed Dendrite Growth Model with Comparisons to In-Situ Results of Equiaxed Dendritic Growth in an Al-Ge Alloy.
Materials Science Forum.
volum 654-656.
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2010)
In situ investigations of liquid-liquid phase separation in hypermonotectic alloys.
Materials Science Forum.
volum 649.
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2010)
In-situ Investigation of Liquid-Liquid Phase Separation in Hypermonotectic Alloys.
Materials Science Forum.
volum 649.
Academic article
-
Walmsley, John;
Albertsen, Jorun Zahl;
Friis, Jesper;
Mathiesen, Ragnvald.
(2010)
The evolution and oxidation of carbides in an Alloy 601 exposed to long term high temperature corrosion conditions.
Corrosion Science.
volum 52 (12).
Academic article
-
Zimmermann, Gerhard;
Hecht, Ulrike;
Mathes, Michael;
Mathiesen, Ragnvald.
(2010)
Time resolved X-ray imaging of eutectic cellular patterns evolving during solidification of ternary Al-Cu-Ag alloys.
International Journal of Materials Research - Zeitschrift für Metallkunde.
volum 101 (12).
Academic article
-
Delaleau, Pierre;
Mathiesen, Ragnvald;
Schaffer, Paul;
Arnberg, Lars.
(2009)
Impact of buoyancy on the growth of equiaxed grains in Al-Cu.
International Journal of Cast Metals Research.
volum 22 (1-4).
Academic article
-
Ruvalcaba, Demian;
Eskin, Dmitry;
Mathiesen, Ragnvald;
Arnberg, Lars;
Katgerman, Laurens.
(2009)
Influence of dendrite arrangement on coarsening during solidification of high-solute Al alloys.
International Journal of Cast Metals Research.
volum 22 (1-4).
Academic article
-
Ruvalcaba, Demian;
Mathiesen, Ragnvald;
Eskin, Dmitry;
Arnberg, Lars;
Katgerman, Laurens.
(2009)
In-situ analysis of coarsening during directional solidification experiments in high-solute aluminium alloys.
Metallurgical and Materials Transactions B.
volum 40 (3).
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2009)
L2 droplet interaction with alpha-Al during solidification of hypermonotectic Al–8 wt.% Bi alloys.
Acta Materialia.
volum 57 (10).
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2009)
Liquid decomposition, droplet coagulation and droplet-interface interactions in hypermonotectic Al-Bi alloys.
Transactions of the Indian Institute of Metals.
volum 62 (4-5).
Academic article
-
Tucho, Wakshum Mekonnen;
Venvik, Hilde Johnsen;
Walmsley, John C;
Stange, M;
Ramachandran, Amutha;
Mathiesen, Ragnvald;
Borg, Anne;
Bredesen, R;
Holmestad, Randi.
(2009)
Microstructural studies of self-supported (1.5-10 mu m) Pd/23 wt% Ag hydrogen separation membranes subjected to different heat treatments.
Journal of Materials Science.
volum 44 (16).
Academic article
-
Albertsen, Jorun Zahl;
Grong, Øystein;
Walmsley, John C;
Mathiesen, Ragnvald;
Beek, W.J..
(2008)
A Model for High-Temperature Pitting Corrosion in Nickel-Based Alloys Involving Internal Precipitation of Carbides, Oxides and Graphite.
Metallurgical and Materials Transactions A.
volum 39.
Academic article
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Forbord, Børge;
Mathiesen, Ragnvald;
Mårdalen, Jostein;
Furu, Trond;
Lange, Hans Iver.
(2008)
Elastic strain and texture evolution during tensile testing of peak-hardened Al-Mg-Si-profiles.
Materials Science & Engineering: A.
volum 479 (1-2).
Academic article
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Larsen, Magnus Hurlen;
Walmsley, John C;
Lunder, Otto;
Mathiesen, Ragnvald;
Nisancioglu, Kemal.
(2008)
Intergranular corrosion of copper-containing AA6xxx AlMgSi aluminum alloys.
Journal of the Electrochemical Society.
volum 155 (11).
Academic article
-
Ratke, Lorenz;
Gandin, Charles Andre;
Mathiesen, Ragnvald;
Rappaz, Michel;
Rex, Stephan.
(2008)
Materials Solidification Physics in Space.
EurophysicsNews.
volum 39 (5).
Article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars;
Di Sabatino, Marisa;
Snigirev, Anatoly.
(2008)
In situ investigation of spinodal decomposition in hypermonotectic Al–Bi and Al–Bi–Zn alloys.
New Journal of Physics.
volum 10.
Academic article
-
Walmsley, John C;
Sævik, Øystein;
Graver, Brit Kathrine F;
Mathiesen, Ragnvald;
Yu, Yingda;
Nisancioglu, Kemal.
(2007)
Nature of Segregated Lead on Electrochemically Active AlPb Alloy.
Journal of the Electrochemical Society.
volum 154 (1).
Academic article
-
Mathiesen, Ragnvald;
Arnberg, Lars.
(2005)
Stray crystal formation in Al-20wt.% Cu studied by synchrotron X-ray video microscopy.
Materials Science & Engineering: A.
volum 413-414.
Academic article
-
Thorkildsen, Gunnar;
Weckert, Edgar;
Mo, Frode;
Larsen, Helge Bøvik;
Mathiesen, Ragnvald.
(2005)
Three-beam resonant X-ray diffraction in germanium - Laue transmission cases.
Acta Crystallographica Section A: Foundations of Crystallography.
volum 61.
Academic article
-
Birkedal, H;
Madsen, Dennis;
Mathiesen, Ragnvald;
Knudsen, K;
Weber, HP;
Pattison, P;
Schwarzenbach, D;
Mathiesen, r*.
(2004)
The charge density of urea from synchrotron diffraction data.
Acta Crystallographica Section A: Foundations of Crystallography.
volum 60.
Academic article
-
Mathiesen, Ragnvald;
Mo, Frode;
Eikenes, Anders;
Nyborg, Tanja;
Larsen, Helge B.;
Authier, Andre.
(1998)
Existence of Two Crystal Structures of the Complex alpha-D-Glucose NaCl H_2O (2:1:1) Verified by Three-Beam Diffraction Experiments.
?.
volum A54.
Academic article
Part of book/report
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Mathiesen, Ragnvald;
Arnberg, Lars.
(2008)
X-Ray Imaging of Solidification Processes and Microstructure Evolution.
ASM Handbook, volume 15, Casting.
Academic chapter/article/Conference paper
Report
-
Brataas, Arne;
Mathiesen, Ragnvald;
Grande, Tor;
Roven, Hans Jørgen;
Grepstad, Jostein;
Echtermeyer, Andreas;
Johnsen, Roy;
Krøkje, Åse.
(2013)
Enabling technologies at NTNU; materials science and engineering.
2013.
Report
Teaching
Courses
Media
2022
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Academic lectureLi, Yanjun; Wang, Shubo; Mathiesen, Ragnvald. (2022) Electric current flash heating (ECFH) induced abnormal nucleation and grain growth behavior during recrystallization of deformed aluminium alloys. The 8th International Conference on Solid -Solid Phase Transformations in Inorganic Materials ; Xi'an. 2022-06-27 - 2022-07-01.
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Academic lectureMirzaei, Fazel; Tekseth, Kim Robert Bjørk; Scheidl, Katharina; Kaestner, Anders; Mathiesen, Ragnvald; Breiby, Dag Werner. (2022) Time-resolved 3D imaging of frost heave using neutron and X-ray computed tomography. Nordic perspectives on advanced neutron imaging ; 2022-11-23 - 2022-11-25.
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PosterMirzaei, Fazel; Tekseth, Kim Robert Bjørk; Younas, Daniyal; Jaiswal, Mukul; Scheidl, Katharina; Kaestner, Anders; Chattopadhyay, Basab; Mathiesen, Ragnvald; Breiby, Dag Werner. (2022) Towards a quantitative microscale understanding of freezing soil using neutron and X-ray tomography. Research School for Training the Next Generation of Micro- and Nanotechnology Researchers in Norway (TNNN) ; 2022-11-30 - 2022-12-02.
2019
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Academic lectureMathiesen, Ragnvald. (2019) On the usage and tuning of beam coherence in ultra-fast high-energy X-ray transmission microscopy. International Baltic School 2019: 4th generation X-ray sources: Coherent optics and Techniques . Immanuel Kant Baltic Federal University; Kaliningrad. 2019-08-26 - 2019-08-29.
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Academic lectureMathiesen, Ragnvald. (2019) Real-time studies of dendritic growth in binary alloys by in-situ synchrotron X-ray imaging. Chineese Materials Conference CMC 2019 ; Chengdu. 2019-07-10 - 2019-07-14.
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Academic lectureMathiesen, Ragnvald. (2019) Recent advances in 3-4D in situ X-ray imaging of solidification dynamics and microstructure formation. MRS Fall meeting . Materials Res. Soc.; Boston, MA. 2019-12-01 - 2019-12-06.
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Academic lectureMathiesen, Ragnvald. (2019) X-ray imaging - towards studies of condensed matter at the mesoscale. Invitert foredrag . Inst. for matematikk og fysikk, UiS; Stavanger. 2019-02-15 - 2019-02-15.
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Academic lectureMürer, Fredrik Kristoffer; Chattopadhyay, Basab; Madathiparambil, Aldritt Scaria; Tekseth, Kim Robert Bjørk; Di Michiel, Marco; Mathiesen, Ragnvald; Olstad, Kristin; Lilledahl, Magnus Borstad; Breiby, Dag Werner. (2019) 3D imaging of bone and cartilage by X-ray phase-contrast and diffraction computed tomography. NanoNetwork, 10th annual workshop ; Tromsø. 2019-06-17 - 2019-06-19.
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PosterMürer, Fredrik Kristoffer; Chattopadhyay, Basab; Madathiparambil, Aldritt Scaria; Tekseth, Kim Robert Bjørk; Di Michiel, Marco; Mathiesen, Ragnvald; Olstad, Kristin; Lilledahl, Magnus Borstad; Breiby, Dag Werner. (2019) 3D imaging of bone and cartilage by X-ray phase-contrast and orientational diffraction tomography. ESRF User Meeting . ESRF; Grenoble. 2019-02-04 - 2019-02-06.
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PosterMürer, Fredrik Kristoffer; Chattopadhyay, Basab; Madathiparambil, Aldritt Scaria; Tekseth, Kim Robert Bjørk; Di Michiel, Marco; Mathiesen, Ragnvald; Olstad, Kristin; Lilledahl, Magnus Borstad; Breiby, Dag Werner. (2019) Orientational imaging of bone and cartilage using small- and wide-angle X-ray scattering. Nordic Workshop on Scattering from Soft Matter (NSSM 2019) . iNano, University of Aarhus; Århus. 2019-01-08 - 2019-02-09.
2018
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Academic lectureMathiesen, Ragnvald. (2018) In-situ X-ray imaging of evolving solidification microstructures. Invitert foredrag . Changchun University of Science and Technology; Changchun. 2018-07-17 - 2018-07-17.
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Academic lectureMathiesen, Ragnvald. (2018) In-situ X-ray imaging of evolving solidification microstructures. Invitert foredrag . Dalian University of Technology; Dalian. 2018-07-16.
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Academic lectureMathiesen, Ragnvald. (2018) In-situ X-ray studies of evolving solidification microstructures. Invitert foredrag . Institute for Metals Research - Chineese Academy of Siences; Shenyang. 2018-07-13 - 2018-07-13.
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Academic lectureMathiesen, Ragnvald. (2018) On the application of in-situ X-ray imaging techniques in solidification science. Invitert foredrag . Shenyang University; Shenyang. 2018-07-06 - 2018-07-06.
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InterviewSund, Steinar; Breiby, Dag Werner; Mathiesen, Ragnvald. (2018) Store ambisjoner for røntgenlaser. Aftenposten Vitenskap [Tidsskrift]. 2018-01-20.
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PosterZhang, Qiuyuan; Larsen, Helge Bøvik; Mathiesen, Ragnvald. (2018) Investigation of glitches induced by single-crystal diamond compound refractive lenses. Synchrotron Radiation Instrumentation (SRI 2018) ; 2018-06-10 - 2018-06-15.
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PosterZhang, Qiuyuan; Polikarpov, Maxim; Klimova, Nataliya; Larsen, Helge Bøvik; Mathiesen, Ragnvald; Emerich, Hermann; Snigireva, Irina; Snigirev, Anatoly. (2018) Glitch spectroscopy of X-ray compound refractive lenses. Poster . ESRF; 2018-02-05 - 2018-02-07.
2017
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Academic lectureBrowne, D. J.; Garcia-Moreno, F; Nguyen-Thi, H.; Zimmermann, G.; Kargl, F.; Mathiesen, Ragnvald; Griesche, A.; Minster, O.. (2017) Overview of In Situ X-Ray Studies of Light Alloy Solidification in Microgravity. TMS 2017 . TMS; San Diego. 2017-02-26 - 2017-03-02.
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Academic lectureCasari, Daniele; Mirihanage, Wajira; Falch, Ken Vidar; Ringdalen, Inga Gudem; Friis, Jesper; Schmid-Fetzer, Rainer; Zhao, Dongdong; Li, Yanjun; Silikens, Wim H; Mathiesen, Ragnvald. (2017) Morphological Transition of a-Mg Dendrites During Near-Isothermal Solidification of a Mg–Nd–Gd–Zn–Zr Casting Alloy. TMS 2017 . TMS; San Diego. 2017-02-26 - 2017-03-02.
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Academic lectureCasari, Daniele; Mirihanage, Wajira; Falch, Ken Vidar; Ringdalen, Inga Gudem; Friis, Jesper; Schmid-Fetzer, Rainer; Zhao, Dongdong; Li, Yanjun; Silikens, Wim H; Mathiesen, Ragnvald. (2017) Morphological Transition of alpha-Mg Dendrites during Near-Isothermal Solidification of an Mg-Nd-Gd-Zn-Zr Casting Alloy. Solidification Processing 2017 (SP17) . BCAST, Brunel Univ. London, UK; Beaumont Estate, Old Windsor, UK. 2017-07-25 - 2017-07-29.
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Academic lectureFalch, Ken Vidar; Mathiesen, Ragnvald. (2017) Zernike Phase Contrast for Hard X-ray Transmission Microscopy. TMS2017 ; San Diego Convention Center. 2017-02-26 - 2017-03-02.
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Academic lectureMathiesen, Ragnvald. (2017) Hard X-ray Transmission Microscopy. Swiss-Norwegian Workshop on Synchrotron and FEL-based Research . SNX, SNBL, PSI; Gradermoen. 2017-06-06 - 2017-06-07.
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Academic lectureMathiesen, Ragnvald. (2017) Hard X-ray Transmission Microscopy (HXTM). SINTEF MC group seminar, Material physics . SINTEF MC; Trondheim. 2017-10-19 - 2017-10-19.
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InterviewMathiesen, Ragnvald; Idsø, Øyvind. (2017) Denne drypper nesten aldri. Hver gang den gjør det, jubler forskerne. Dagbladet [Avis]. 2017-05-17.
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Academic lectureMirihanage, Wajira; Casari, Daniele; Falch, Ken Vidar; Mathiesen, Ragnvald. (2017) Examining Columnar Dendritic Growth under Dynamic Solute Concentration Level Variations. Solidification Processing 2017 (SP17) . BCAST, Brunel Univ. London, UK; Beaumont Estate, Old Windsor, UK. 2017-07-25 - 2017-07-29.
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Academic lectureNguyen-Thi, Henri; Browne, David J.; Zimmermann, Gerhard; Reinhart, Guillaume; Murphy, Andrew G; Salloum-Abou-Jaoudé, Georges; Abou-Khalil, L; Mathiesen, Ragnvald; Silikens, Wim H. (2017) Overivew of In Situ X-ray Studies of Metal Alloy Solidification in Microgravity Conditions - The XRMON Project. Solidification Processing 2017 (SP17) . BCAST, Brunel Univ. London, UK; Beaumont Estate, Old Windsor, UK. 2017-07-25 - 2017-07-29.
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Academic lectureXu, Yijiang; Casari, Daniele; Mathiesen, Ragnvald; Liu, X.F.; Li, Yanjun. (2017) Nucleation and Growth of Primary Si during Solidification of Hypereutectic Al-Si Alloys: A Combined in situ X-radiography and ex situ TP-1 Type Test. Solidification Processing 2017 (SP17) . BCAST, Brunel Univ. London, UK; Beaumont Estate, Old Windsor, UK. 2017-07-25 - 2017-07-28.
2016
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PosterFalch, Ken Vidar; Mathiesen, Ragnvald. (2016) Polychromatic synchrotron radiation x-ray microscopy. SCANDEM . NTNU; Trondheim. 2016-06-07 - 2016-06-10.
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Academic lectureMathiesen, Ragnvald; Falch, Ken Vidar. (2016) Hard X-ray Transmission Microscopy. CINEMA Midterm Workshop . DTU Fysikk; København. 2016-09-15 - 2016-09-16.
2015
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LectureMathiesen, Ragnvald. (2015) ESRF Phase II Source Upgrade. Norwegian Synchrotron and Neutron User Meeting ; Sola. 2015-01-19 - 2015-01-20.
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Academic lectureMathiesen, Ragnvald. (2015) Solidification microstructure evolution in simulated spot welding by ultra-fast time-resolved X-ray diffraction. ICSSP6 ; Hyderabad. 2015-11-24 - 2015-11-27.
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Academic lectureMirihanage, Wajira; Di Michiel, Marco; Mathiesen, Ragnvald. (2015) Ultra-fast in-situ X-ray studies of evolving columnar dendrites in solidifying steel weld pools. MCWASP XIV: INTERNATIONAL CONFERENCE ON MODELLING OF CASTING, WELDING AND ADVANCED SOLIDIFICATION PROCESSES ; 2015-06-21 - 2015-06-26.
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PosterReiten, Andreas; Mathiesen, Ragnvald; Chernyshov, Dimitry. (2015) Strain-induced relaxor to anti-ferroelectric transition in PMN-PT thin films. Norwegian Synchrotron and Neutron User Meeting ; Sola. 2015-01-19 - 2015-01-20.
2014
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Academic lectureZha, Min; Li, Yanjun; Mathiesen, Ragnvald; Bjørge, Ruben; Roven, Hans Jørgen. (2014) A bimodal microstructure and improved mechanical properties of an Al-Mg alloy processed by ECAP combined with inter-pass annealing. NanoSPD6 ; 2014-06-29 - 2014-07-04.
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Academic lectureZha, Min; Li, Yanjun; Mathiesen, Ragnvald; Bjørge, Ruben; Roven, Hans Jørgen. (2014) Development of high strength and high ductility Al-Mg alloys by ECAP and inter-pass annealing. NMS SOMMERMØTE 2014 ; 2014-06-04 - 2014-06-05.
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Academic lectureZha, Min; Li, Yanjun; Mathiesen, Ragnvald; Bjørge, Ruben; Roven, Hans Jørgen. (2014) Influence of Mg content, grain size and strain rate on mechanical properties and deformation behaviors in Al-Mg alloys processed by ECAP and annealing. ICAA 2014 . NTNU; 2014-06-15 - 2014-06-19.
2013
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Academic lectureHøydalsvik, Kristin; Fløystad, Jostein Bø; Zhao, Tiejun; Esmaeili, Morteza; Diaz, Ana; Andreasen, Jens Wenzel; Mathiesen, Ragnvald; Rønning, Magnus; Breiby, Dag Werner. (2013) In situ coherent X-ray diffractive imaging of CO2-storing nanoparticles. Norwegian PhD Network on Nanotechnology for Microsystems; 4th annual workshop ; Bergen. 2013-06-17 - 2013-06-19.
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Academic lectureHøydalsvik, Kristin; Fløystad, Jostein Bø; Mathiesen, Ragnvald; Rønning, Magnus; Breiby, Dag Werner. (2013) Using X-rays for investigating nanoscale particles and structures. Invited guest lecture at ESRF, Grenoble. ; ESRF, Grenoble. 2013-10-09.
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Academic lectureMathiesen, Ragnvald. (2013) New opportunities in material science - Fast kinetics and mesoscale structure dynamics seen with a new source. ESRF User Meeting - Work Shop Material Science and Chemistry . European Synchrotron Radiation Facility; Grenoble. 2013-02-04 - 2013-02-06.
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Academic lectureMathiesen, Ragnvald. (2013) Synchrotron X-ray imaging for the study of solidification in metallic alloys. The II International Baltic School on Methods and Instruments of the X-ray investigation . The Immanuel Kant Baltic Federal University; Kaliningrad. 2013-10-03 - 2013-10-07.
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Academic lectureMathiesen, Ragnvald. (2013) Time-resolved X-ray diffraction and imaging studies of liquid->solid phase transformation. Instituttseminar . Institutt for fysikk, DTU; København/Lyngby. 2013-11-14 - 2013-11-14.
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Academic lectureZha, Min; Li, Yanjun; Mathiesen, Ragnvald; Bjørge, Ruben; Roven, Hans Jørgen. (2013) Development of an Al-7Mg alloy with a high strength and good ductility by ECAP. 5th International Conference on Recrystallization & Grain Growth 2013 ; 2013-05-05 - 2013-05-10.
2012
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Academic lectureFløystad, Jostein Bø; Esmaeili, Morteza; Böttiger, Arvid P.L.; Høydalsvik, Kristin; Diaz, Ana; Mathiesen, Ragnvald; Rønning, Magnus; Andreasen, Jens Wenzel; Breiby, Dag Werner. (2012) Lensless X-Ray Imaging in Non-Ambient Conditions for Materials Science. Norwegian Synchrotron and Neutron User Meeting 2012 ; Sola, Rogaland. 2012-01-30 - 2012-01-31.
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Academic lectureFløystad, Jostein Bø; Esmaeili, Morteza; Høydalsvik, Kristin; Diaz, Ana; Mathiesen, Ragnvald; Rønning, Magnus; Andreasen, Jens Wenzel; Breiby, Dag Werner. (2012) In Situ Lensless X-ray Microscopy in Material Science. "SCANDEM", Annual Meeting of the Nordic Microscopy Society ; Bergen. 2012-06-13.
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Academic lectureFløystad, Jostein Bø; Esmaeili, Morteza; Høydalsvik, Kristin; Diaz, Ana; Mathiesen, Ragnvald; Rønning, Magnus; Breiby, Dag Werner. (2012) In Situ X-ray Coherent Diffractive Imaging. 7th International Conference on the Physical Properties and Application of Advanced Materials ; Trondheim. 2012-06-18.
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Academic lectureFløystad, Jostein Bø; Esmaeili, Morteza; Høydalsvik, Kristin; Mathiesen, Ragnvald; Andreasen, Jens Wenzel; Rønning, Magnus; Breiby, Dag Werner. (2012) Towards 3D imaging of working catalyst nanoparticles. HYBRIS: HYbrid Beamline for In Situ 3D Resonant Imaging and Spectroscopy . Øresund Materials Innovation Community; Technical University of Denmark (DTU). 2012-12-12 - 2012-12-12.
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Academic lectureDarlapudi, A; Felberbaum, M; Mathiesen, Ragnvald; Dahle, Arne Kristian. (2012) The Influence of Cu on Eutectic Nucleation and Morphology in Hypoeutectic Al-Si Alloys. ICAA13: 13th International Conference on Aluminum Alloys ; 2012-07-03 - 2012-07-07.
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Academic lectureMathiesen, Ragnvald. (2012) Solidification microstructure formation and evolution in eutecetics studied by time-resolved X-ray imaging. Hero-M 2012 . KTH, Stockholm; Skepparholmen. 2012-05-23 - 2012-05-24.
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Academic lectureMathiesen, Ragnvald. (2012) Synchrotron radiation as a tool in material science and engineering. Leading Edges in Welding - Summer School in Modelling of Welding . TWI Ltd; Granta Park, Cambridge. 2012-07-30 - 2012-08-02.
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Academic lectureMathiesen, Ragnvald; Arnberg, Lars. (2012) X-radiographic video microscopy studies of alloy solidification processes. Norwegian Synchrotron and Neutron User Meeting . Norsk Forskningsråd - SYNKNØYT-PROG; 2012-01-30 - 2012-01-31.
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Academic lectureMirihanage, Wajira; Arnberg, Lars; Mathiesen, Ragnvald. (2012) In-situ observation of transient columnar dendrite growth in the presence of thermo-solutal convection. MCWASP XIII . Univ. Loeben; Schladming. 2012-06-17 - 2012-06-22.
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Academic lectureMurphy, Andrew G; Browne, David; Mirihanage, Wajira; Mathiesen, Ragnvald. (2012) Real time in-situ observations of equiaxed dendrite coherency in al-cu alloys using high brilliance 3rd generation synchrotron sources. TMS Annual Meeting . TMS; Orlando. 2012-03-11 - 2012-03-15.
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Academic lectureReinhart, G; Nguyen-Thi, H; Bogno, A; Billia, B; Houltz, Y; Loth, K; Voss, D; Verga, A; de Pascale, F; Mathiesen, Ragnvald; Zimmermann, Gerhard. (2012) X-RAY RADIOGRAPHIC OBSERVATION OF DIRECTIONAL SOLIDIFICATION UNDER MICROGRAVITY: XRMON-GF EXPERIMENTS ON MASER12 SOUNDING ROCKET MISSION. TMS Annual Meeting . TMS; San Antonio, Texas. 2012-03-11 - 2012-03-15.
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PosterZha, Min; Li, Yanjun; Mathiesen, Ragnvald; Roven, Hans Jørgen; Bjørge, Ruben. (2012) Annealing response and strengthening mechanisms of an Al-7,5Mg alloy processed by ECAP. TMS Annual Meeting 2012 . TMS; Orlando, Florida. 2012-03-11 - 2012-03-15.
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Academic lectureZha, Min; Li, Yanjun; Mathiesen, Ragnvald; Roven, Hans Jørgen; Bjørge, Ruben. (2012) Annealing response and strengthening mechanisms of an Al-7Mg alloy processed by ECAP. Nasjonal Konferanse for Materialteknologi, Sommermøte 2012 . Norsk Metallurgisk Selskap; Trondheim. 2012-05-09 - 2012-05-10.
2011
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PosterHøydalsvik, Kristin; Esmaeili, Morteza; Fløystad, Jostein Bø; Granlund, Håvard; Buset, Ole Tore; Mathiesen, Ragnvald; Breiby, Dag Werner. (2011) GAXS – a multipurpose instrument for X-ray scattering experiments. GISAXS 2011 . HASYLAB / DESY; HASYLAB. 2011-10-10 - 2011-10-12.
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PosterFløystad, Jostein Bø; Høydalsvik, Kristin; Mathiesen, Ragnvald; Rønning, Magnus; Breiby, Dag Werner. (2011) In situ X-ray imaging of catalyst nanoparticles. HERCULES 2011 ; 2011-03-18 - 2011-03-18.
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PosterHøydalsvik, Kristin; Buset, Ole Tore; Mathiesen, Ragnvald; Breiby, Dag Werner. (2011) General Angle X-ray Scattering (“GAXS”) – a multipurpose instrument for X-ray scattering experiments. 6th Annual NTNU NanoLab Meeting . NTNU NanoLab; 2011-11-16 - 2011-11-16.
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Academic lectureMathiesen, Ragnvald. (2011) Studies of solidification microstructure evolution in metals by synchrotron experiments. Metallurgmøtet, Stockholm 2011 . Jernverkskontoret; KTH Stockholm. 2011-01-19 - 2011-01-20.
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Academic lectureMathiesen, Ragnvald. (2011) X-radiographic video microscopy studies of alloy solidification processes. Instituttseminar, Dept. Mat. Eng. and Mat. Sci., Univ. Queensland . Dept. Mat. Eng. and Mat. Sci., Univ. Queensland; Brisbane. 2011-05-31 - 2011-05-31.
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Academic lectureMathiesen, Ragnvald; Arnberg, Lars; Li, Yanjun; Dahle, Arne Kristian. (2011) Al-Si eutectic microstructure formation in directional solidification of Al-Si-Cu alloys. The fourth Chineese-Norwegian symposium on light metals & new energy . NTNU; Trondheim. 2011-08-24 - 2011-08-26.
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Academic lectureNguyen-Thi, H; Bogno, A; Reinhart, G; Billia, B; Mathiesen, Ragnvald; Zimmermann, Gerhard; Houltz, Y; Loth, K; Voss, D; Verga, A; de Pascale, F. (2011) XRMON-GF experimental set-up devoted to x-ray radiographic observation of directional solidification under microgravity on maser12 sounding rocket mission. 20th ESA Symposium on European Rocket & Balloon Programmes and related research ; Hyeres. 2011-05-22 - 2011-05-26.
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Academic lectureZha, Min; Li, Yanjun; Mathiesen, Ragnvald; Bjørge, Ruben; Roven, Hans Jørgen. (2011) Microstructure evolution in an UFG Al-7Mg alloy processed by ECAP during subsequent annealing. The 4th Chinese–Norwegian Symposium on Light Metals ; 2011-08-24 - 2011-08-28.
2010
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Academic lectureMathiesen, Ragnvald; Arnberg, Lars; Li, Yanjun; Dahle, Arne Kristian. (2010) In-situ X-ray video microscopy studies of Al-Si eutectic solidification. ICAA12 . Intl. Aluminium Assoc.; Yokohama. 2010-09-06 - 2010-09-09.
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Academic lectureDelaleau, Pierre; Beckermann, Christoph; Mathiesen, Ragnvald; Arnberg, Lars. (2010) Mesoscopic Simulation of Directional Solidification of Al-Cu Alloys with Convection. The 2nd International Symposium on Cutting Edge of Computer Simulation of Solidification and Casting (CSSC2010) . The Iron and Steel Institute of Japan (ISIJ); Sapporo. 2010-02-03 - 2010-02-05.
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PosterFløystad, Jostein Bø; Grepstad, Sigrid; Mo, Frode; Mathiesen, Ragnvald; Tybell, Thomas; Breiby, Dag Werner. (2010) Domain size distributions in ferroelectric PbTiO3 thin films. 1st annual workshop in the Norwegian PhD Network on Nanotechnology for Microsystems ; 2010-05-29 - 2010-06-02.
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Academic lectureMathiesen, Ragnvald. (2010) Synchrotron radiation - opportunities in material science. Hero-m Summer School . Hero-m CoE/KTH; Tallberg. 2010-06-28 - 2010-07-01.
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Academic lectureMathiesen, Ragnvald; Arnberg, Lars. (2010) X-radiographic video microscopy studies of alloy solidification processes. Deutsche Physikalische Gesellschaft Spring Meeting . Deutsche Physikalische Gesellschaft; Regensburg. 2010-03-22 - 2010-03-26.
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Academic lectureMathiesen, Ragnvald; Arnberg, Lars. (2010) X-radiographic video microscopy studies of solidification processes. Work Shop - Spring-8 synchrotron, Japan . Spring-8 og Univ. Osaka; Spring-8. 2010-02-08 - 2010-02-08.
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Academic lectureMathiesen, Ragnvald; Arnberg, Lars. (2010) X-radiographic video microscopy studies of solidification processes - eutectic solidification. The 2nd International Symposium on Cutting Edge of Computer Simulation of Solidification and Casting (CSSC2010) . Iron and Steel Institute of Japan (ISIJ); Sapporo. 2010-02-03 - 2010-02-05.
2009
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Academic lectureDelaleau, Pierre; Mathiesen, Ragnvald; Schaffer, Paul; Arnberg, Lars; Beckermann, Christoph. (2009) Modeling and in-situ X-ray video microscopy of confined equiaxed grain growth and buoyant motion in Al-Cu. Modelling of Casting, Welding and Advanced Solidification Processes, MCWASP XII ; Vancouver. 2009-06-07 - 2009-06-14.
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Academic lectureDelaleau, Pierre; Mathiesen, Ragnvald; Schaffer, Paul; Bellmann, Martin; Arnberg, Lars. (2009) Impact of confinement on the growth of equiaxed grains in Al-Cu during X-ray radiography. TMS2009 . The Minerals, Metals & Materials Society (TMS); San Francisco. 2009-02-15 - 2009-02-19.
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Academic lectureMathiesen, Ragnvald. (2009) In situ X-ray videomicroscopy on evolving alloy solidification microstructures. Instituttseminar . Computational Material Science, EPFL; Lausanne. 2009-07-01.
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Academic lectureMathiesen, Ragnvald. (2009) Microstructure evolution and fundamental characteristics in solidification of metals and alloys - a comparison of modelling and experiments. TMS2009 . The Mineral, Metals & Materials Society (TMS); San Francisco. 2009-02-15 - 2009-02-19.
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Academic lectureMathiesen, Ragnvald; Arnberg, Lars. (2009) In situ X-ray videomicroscopy on evolving solidification microstructures in eutectic alloys. Insitituttseminar . Risø DTU Dept. of Materials Research; Risø DTU. 2009-12-15 - 2009-12-15.
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Academic lectureMathiesen, Ragnvald; Arnberg, Lars. (2009) Real-time X-ray imaging of diffusive and convective mass transport in alloy solidification processing. MaxLab User Meeting . Max Lab; Lund. 2009-11-02 - 2009-11-04.
2007
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Academic lectureMathiesen, Ragnvald. (2007) Solidification Processing of Metals studied by in-situ X-ray video microscopy. Instituttseminar . Inst. National Polytech. Grenoble; Grenoble. 2007-11-05 - 2007-11-05.
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Academic lectureMathiesen, Ragnvald. (2007) Solidification Processing of Metals studied by in-situ X-ray video microscopy. MaxLab User Meeting and MaxLabIV Work shop . MaxLab; Lund. 2007-10-29 - 2007-10-31.
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Academic lectureMathiesen, Ragnvald. (2007) Solidification Processing of Metals studied by in-situ X-ray video microscopy. Instituttseminar . Dept. of Material Science, Univ. Queensland; Brisbane. 2007-10-18 - 2007-10-18.