Ragnvald Mathiesen
Publications
2025
-
Mirzaei, Fazel;
Jaiswal, Mukul;
Younas, Daniyal;
Kaestner, Anders;
Scheidl, Katharina;
Chattopadhyay, Basab.
(2025)
4D imaging of frost heave and ice lens growth in silt using neutron and x-ray computed tomography.
Applied Physics Letters
Academic article
-
Stickland, Joe Jacob;
Schröer, Laurent;
Buyse, Florian;
Guedes, Alexandra;
Haugen, Håvard Jostein;
Mathiesen, Ragnvald.
(2025)
Advanced microscopy probes for geomaterials – current state of the art and future
perspectives.
Tomography of Materials and Structures
Academic article
2023
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Reinhart, G.;
Browne, D.J.;
Kargl, F.;
García-Moreno, F.;
Becker, M.;
Sondermann, E..
(2023)
In-situ X-ray monitoring of solidification and related processes of metal alloys.
npj Microgravity
Academic literature review
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Ma, Sida;
Zong, Nanfu;
Dong, Zihui;
Hu, Yaowen;
Jing, Tao;
Li, Yanjun.
(2023)
Ti-adsorption induced strain release in promoting α-Al nucleation at TiB2 - Al interfaces.
Applied Surface Science
Academic article
2021
-
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
Academic article
-
Zha, Min;
Zhang, Hongmin;
Jia, Hailong;
Gao, Yipeng;
Jin, Shenbao;
Sha, Gang.
(2021)
Prominent role of multi-scale microstructural heterogeneities on superplastic deformation of a high solid solution Al–7Mg alloy.
International journal of plasticity
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
Academic article
2020
-
Ormstrup, Jeppe;
Østergaard, Emil V.;
Detlefs, Carsten;
Mathiesen, Ragnvald;
Yildirim, Can;
Kutsal, Mustafacan.
(2020)
Imaging microstructural dynamics and strain fields in electro-active materials in situ with dark field x-ray microscopy.
Review of Scientific Instruments
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
Academic article
-
Feng, Shikang;
Liotti, Enzo;
Lui, Andrew;
Wilson, Matthew D.;
Connolley, Thomas;
Mathiesen, Ragnvald.
(2020)
In-situ X-ray radiography of primary Fe-rich intermetallic compound formation.
Acta Materialia
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
Academic article
2019
-
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
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
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
-
Mirihanage, Wajira;
Falch, Ken Vidar;
Casari, Daniele;
McFadden, Shaun;
Browne, David J.;
Snigireva, I..
(2019)
Non-steady 3D dendrite tip growth under diffusive and weakly convective
conditions.
Materialia
Academic article
-
Zhang, Qiuyuan;
Polikarpov, Maxim;
Nataliya, Klimova;
Larsen, Helge Bøvik;
Mathiesen, Ragnvald;
Emerich, Hermann.
(2019)
Investigation of glitches induced by single-crystal diamond compound refractive lenses based on crystal orientation.
AIP Conference Proceedings
Academic article
2018
-
Falch, Ken Vidar;
Lyubormiskiy, Mikhail;
Casari, Daniele;
Snigirev, Anatoly;
Snigireva, Irina;
Detlefs, Carsten.
(2018)
Zernike phase contrast in high-energy x-ray transmission microscopy based on refractive optics.
Ultramicroscopy
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
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
Academic article
-
Aucott, Lee;
Dong, Hongbiao;
Mirihanage, Wajira;
Atwood, Robert;
Kidess, Anton;
Gao, Shian.
(2018)
Revealing internal flow behaviour in arc welding and additive manufacturing of metals.
Nature Communications
Academic article
-
Zha, Min;
Yu, Zhi-Yuan;
Qian, Feng;
Wang, Huiyuan;
Li, Yanjun;
Mathiesen, Ragnvald.
(2018)
Achieving dispersed fine soft Bi particles and grain refinement in a hypermonotectic Al–Bi alloy by severe plastic deformation and annealing.
Scripta Materialia
Academic article
-
Zhang, Qiuyuan;
Polikarpov, Maxim;
Klimova, Nataliya;
Larsen, Helge Bøvik;
Mathiesen, Ragnvald;
Emerich, Hermann.
(2018)
Investigation of `glitches' in the energy spectrum induced by single-crystal diamond compound X-ray refractive lenses.
Journal of Synchrotron Radiation
Academic article
2017
-
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
Academic article
-
Falch, Ken Vidar;
Casari, Daniele;
Michiel, Marco Di;
Detlefs, Carsten;
Snigirev, Anatoly;
Snigireva, Irina.
(2017)
In situ hard X-ray transmission microscopy for material science.
Journal of Materials Science
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
Academic article
-
Falch, Ken Vidar;
Mathiesen, Ragnvald.
(2017)
High-energy X-ray Transmission Microscopy based on Compound Refractive Lenses.
Norges teknisk-naturvitenskapelige universitet
Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
-
Casari, Daniele;
Mirihanage, Wajira;
Falch, Ken Vidar;
Ringdalen, Inga Gudem;
Friis, Jesper;
Schmid-Fetzer, Rainer.
(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
Academic article
-
Browne, David J.;
García-Moreno, Francisco;
Nguyen-Thi, Henri;
Zimmermann, Gerhard;
Kargl, Florian;
Mathiesen, Ragnvald.
(2017)
Overview of in situ X-Ray studies of light alloy solidification in microgravity.
The Minerals, Metals & Materials Series
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
Academic article
2016
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Murphy, Andrew G;
Mathiesen, Ragnvald;
Houltz, Ylva;
Li, J;
Lockowandt, C;
Henriksson, K.J..
(2016)
XRMON-SOL: Isothermal equiaxed solidification of a grain refined Al-20 wt%Cu alloy.
Journal of Crystal Growth
Academic article
-
Sillekens, W.H.;
Casari, Daniele;
Mirihanage, Wajira U.;
Terzi, S;
Mathiesen, Ragnvald;
Salvo, L.
(2016)
The Use of In Situ X-ray Imaging Methods in the Research
and Development of Magnesium-Based Grain-Refined
and Nanocomposite Materials.
JOM
Academic article
-
Casari, Daniele;
Mirihanage, Wajira;
Falch, Ken Vidar;
Ringdalen, Inga Gudem;
Friis, Jesper;
Schmid-Fetzer, Rainer.
(2016)
α-Mg primary phase formation and dendritic morphology transition in solidification of a Mg-Nd-Gd-Zn-Zr casting alloy.
Acta Materialia
Academic article
-
Mathiesen, Ragnvald.
(2016)
Det europeiske superrøntgenanlegget ESRF under oppgradering.
Fra Fysikkens Verden
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
Academic article
-
Falch, Ken Vidar;
Detlefs, Carsten;
Michiel, Marco Di;
Snigireva, Irina;
Snigirev, Anatoly;
Mathiesen, Ragnvald.
(2016)
Correcting lateral chromatic aberrations in non-monochromatic X-ray
microscopy.
Applied Physics Letters
Academic article
-
Murphy, Andrew G.;
Mathiesen, Ragnvald;
Houltz, Ylva;
Li, J.;
Lockowandt, C;
Henriksson, K.
(2016)
Direct observation of spatially isothermal equiaxed solidification of an Al–Cu alloy in microgravity onboard the MASER13 sounding rocket.
Journal of Crystal Growth
Academic article
2015
-
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
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
Academic article
-
Mirihanage, Wajira;
Michiel, Marco Di;
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
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
Academic article
-
Reiten, Andreas;
Chernyshov, Dmitry;
Mathiesen, Ragnvald.
(2015)
Nebula: Reconstruction and visualization of scattering data in reciprocal space.
Journal of Applied Crystallography
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
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
Academic article
2014
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Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Roven, Hans Jørgen.
(2014)
Development and characterizationof high solid solution Al-Mg alloysand an immiscible Al-Bi alloyprocessed by ECAP and annealing.
Norges teknisk-naturvitenskapelige universitet
Doktoravhandlinger ved NTNU, 1503-8181 (2014:149)
Doctoral dissertation
-
Mirihanage, Wajira;
Falch, Ken Vidar;
Snigireva, Irina;
Snigirev, A;
Li, Yanjun;
Arnberg, Lars.
(2014)
Retrieval of three-dimensional spatial information from fast in situ two-dimensional synchrotron radiography of solidification microstructure evolution.
Acta Materialia
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
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
Reader opinion piece
-
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
Academic article
-
Høydalsvik, Kristin;
Fløystad, Jostein Bø;
Zhao, Tiejun;
Esmaeili, Morteza;
Diaz, Ana;
Andreasen, Jens Wenzel.
(2014)
In situ X-ray ptychography imaging of high-temperature CO2 acceptor particle agglomerates.
Applied Physics Letters
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
Academic article
-
Liotti, E;
Lui, A;
Vincent, R.;
Kumar, S;
Guo, Z;
Connolley, T.
(2014)
A synchrotron X-ray radiography study of dendrite fragmentation induced by a pulsed electromagnetic field in an Al-15Cu alloy.
Acta Materialia
Academic article
-
Mirihanage, Wajira;
Michel, Marco Di;
Reiten, Andreas;
Arnberg, Lars;
Dong, Hongbiao;
Mathiesen, Ragnvald.
(2014)
Time-resolved X-ray diffraction studies of solidification microstructure evolution in welding.
Acta Materialia
Academic article
-
Nguyen-Thi, Henri;
Reinhart, Guillaume;
Salloum-Abou-Jaoudé, Georges;
Browne, David;
Murphy, Anthony G.;
Houltz, Ylva.
(2014)
XRMON-GF experiments devoted to the in situ X-ray radiographic observation of growth process in microgravity conditions.
Microgravity, science and technology
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
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
Academic article
2013
-
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
Academic article
-
Liotti, E;
Lui, A;
Vincent, R.;
Kumar, S.;
Guo, Z;
Connolley, T.
(2013)
A Synchrotron X-ray Radiography Investigation of Induced Dendrite Fragmentation in Al-15wt%Cu.
Materials Science Forum
Academic article
-
Brataas, Arne;
Mathiesen, Ragnvald;
Grande, Tor;
Roven, Hans Jørgen;
Grepstad, Jostein;
Echtermeyer, Andreas.
(2013)
Enabling technologies at NTNU; materials science and engineering.
NTNU
NTNU
Report
-
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
Academic article
-
Nguyen-Thi, H;
Reinhart, G;
Jaoude, G.S. Abou;
Mathiesen, Ragnvald;
Zimmermann, Gerhard;
Houltz, Y.
(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
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
Academic article
-
Nguyen-Thi, H;
Salvo, L;
Mathiesen, Ragnvald;
Arnberg, Lars;
Billia, B;
Suery, M.
(2012)
On the interest of synchrotron X-ray imaging for the study of solidification in metallic alloys.
Comptes rendus. Physique
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
Academic article
2011
-
Mathiesen, Ragnvald;
Arnberg, Lars;
Li, Yanjun;
Meier, Vivienne;
Schaffer, Paul;
Snigireva, Irina.
(2011)
X-Ray Videomicroscopy Studies of Eutectic Al-Si Solidification in Al-Si-Cu.
Metallurgical and Materials Transactions A
Academic article
-
Nguyen-Thi, H;
Bogno, A;
Reinhart, G;
Billia, B;
Mathiesen, Ragnvald;
Zimmermann, Gerhard.
(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)
Academic article
-
Rakete, Christoph;
Baumbach, C;
Goldschmidt, A;
Samberg, D;
Schroer, C.G.;
Breede, F.
(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
Academic article
-
Anawati, Ms;
Diplas, Spyridon;
Holme, Børge;
Solberg, Jan Ketil;
Mathiesen, Ragnvald;
Walmsley, John.
(2011)
Surface Characterization of Heat Treated AlPbCu Model Alloys.
Journal of the Electrochemical Society
Academic article
2010
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2010)
In-situ Investigation of Liquid-Liquid Phase Separation in Hypermonotectic Alloys.
Materials Science Forum
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
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
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2010)
In situ investigations of liquid-liquid phase separation in hypermonotectic alloys.
Materials Science Forum
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
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
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
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
Academic article
2009
-
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
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
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
Academic article
-
Tucho, Wakshum Mekonnen;
Venvik, Hilde Johnsen;
Walmsley, John C;
Stange, M;
Ramachandran, Amutha;
Mathiesen, Ragnvald.
(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
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
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
Academic article
2008
-
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
Academic article
-
Ratke, Lorenz;
Gandin, Charles Andre;
Mathiesen, Ragnvald;
Rappaz, Michel;
Rex, Stephan.
(2008)
Materials Solidification Physics in Space.
EurophysicsNews
Article in business/trade/industry journal
-
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
Academic article
-
Mathiesen, Ragnvald;
Arnberg, Lars.
(2008)
X-Ray Imaging of Solidification Processes and Microstructure Evolution.
Academic chapter/article/Conference paper
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars;
Sabatino, Marisa Di;
Snigirev, Anatoly.
(2008)
In situ investigation of spinodal decomposition in hypermonotectic Al–Bi and Al–Bi–Zn alloys.
New Journal of Physics
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
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
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
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
Academic article
2004
-
Birkedal, H;
Madsen, Dennis;
Mathiesen, Ragnvald;
Knudsen, K;
Weber, HP;
Pattison, P.
(2004)
The charge density of urea from synchrotron diffraction data.
Acta Crystallographica Section A: Foundations of Crystallography
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.
?
Academic article
Journal publications
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Mirzaei, Fazel;
Jaiswal, Mukul;
Younas, Daniyal;
Kaestner, Anders;
Scheidl, Katharina;
Chattopadhyay, Basab.
(2025)
4D imaging of frost heave and ice lens growth in silt using neutron and x-ray computed tomography.
Applied Physics Letters
Academic article
-
Stickland, Joe Jacob;
Schröer, Laurent;
Buyse, Florian;
Guedes, Alexandra;
Haugen, Håvard Jostein;
Mathiesen, Ragnvald.
(2025)
Advanced microscopy probes for geomaterials – current state of the art and future
perspectives.
Tomography of Materials and Structures
Academic article
-
Reinhart, G.;
Browne, D.J.;
Kargl, F.;
García-Moreno, F.;
Becker, M.;
Sondermann, E..
(2023)
In-situ X-ray monitoring of solidification and related processes of metal alloys.
npj Microgravity
Academic literature review
-
Ma, Sida;
Zong, Nanfu;
Dong, Zihui;
Hu, Yaowen;
Jing, Tao;
Li, Yanjun.
(2023)
Ti-adsorption induced strain release in promoting α-Al nucleation at TiB2 - Al interfaces.
Applied Surface Science
Academic article
-
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
Academic article
-
Zha, Min;
Zhang, Hongmin;
Jia, Hailong;
Gao, Yipeng;
Jin, Shenbao;
Sha, Gang.
(2021)
Prominent role of multi-scale microstructural heterogeneities on superplastic deformation of a high solid solution Al–7Mg alloy.
International journal of plasticity
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
Academic article
-
Ormstrup, Jeppe;
Østergaard, Emil V.;
Detlefs, Carsten;
Mathiesen, Ragnvald;
Yildirim, Can;
Kutsal, Mustafacan.
(2020)
Imaging microstructural dynamics and strain fields in electro-active materials in situ with dark field x-ray microscopy.
Review of Scientific Instruments
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
Academic article
-
Feng, Shikang;
Liotti, Enzo;
Lui, Andrew;
Wilson, Matthew D.;
Connolley, Thomas;
Mathiesen, Ragnvald.
(2020)
In-situ X-ray radiography of primary Fe-rich intermetallic compound formation.
Acta Materialia
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
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
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
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
-
Mirihanage, Wajira;
Falch, Ken Vidar;
Casari, Daniele;
McFadden, Shaun;
Browne, David J.;
Snigireva, I..
(2019)
Non-steady 3D dendrite tip growth under diffusive and weakly convective
conditions.
Materialia
Academic article
-
Zhang, Qiuyuan;
Polikarpov, Maxim;
Nataliya, Klimova;
Larsen, Helge Bøvik;
Mathiesen, Ragnvald;
Emerich, Hermann.
(2019)
Investigation of glitches induced by single-crystal diamond compound refractive lenses based on crystal orientation.
AIP Conference Proceedings
Academic article
-
Falch, Ken Vidar;
Lyubormiskiy, Mikhail;
Casari, Daniele;
Snigirev, Anatoly;
Snigireva, Irina;
Detlefs, Carsten.
(2018)
Zernike phase contrast in high-energy x-ray transmission microscopy based on refractive optics.
Ultramicroscopy
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
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
Academic article
-
Aucott, Lee;
Dong, Hongbiao;
Mirihanage, Wajira;
Atwood, Robert;
Kidess, Anton;
Gao, Shian.
(2018)
Revealing internal flow behaviour in arc welding and additive manufacturing of metals.
Nature Communications
Academic article
-
Zha, Min;
Yu, Zhi-Yuan;
Qian, Feng;
Wang, Huiyuan;
Li, Yanjun;
Mathiesen, Ragnvald.
(2018)
Achieving dispersed fine soft Bi particles and grain refinement in a hypermonotectic Al–Bi alloy by severe plastic deformation and annealing.
Scripta Materialia
Academic article
-
Zhang, Qiuyuan;
Polikarpov, Maxim;
Klimova, Nataliya;
Larsen, Helge Bøvik;
Mathiesen, Ragnvald;
Emerich, Hermann.
(2018)
Investigation of `glitches' in the energy spectrum induced by single-crystal diamond compound X-ray refractive lenses.
Journal of Synchrotron Radiation
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
Academic article
-
Falch, Ken Vidar;
Casari, Daniele;
Michiel, Marco Di;
Detlefs, Carsten;
Snigirev, Anatoly;
Snigireva, Irina.
(2017)
In situ hard X-ray transmission microscopy for material science.
Journal of Materials Science
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
Academic article
-
Casari, Daniele;
Mirihanage, Wajira;
Falch, Ken Vidar;
Ringdalen, Inga Gudem;
Friis, Jesper;
Schmid-Fetzer, Rainer.
(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
Academic article
-
Browne, David J.;
García-Moreno, Francisco;
Nguyen-Thi, Henri;
Zimmermann, Gerhard;
Kargl, Florian;
Mathiesen, Ragnvald.
(2017)
Overview of in situ X-Ray studies of light alloy solidification in microgravity.
The Minerals, Metals & Materials Series
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
Academic article
-
Murphy, Andrew G;
Mathiesen, Ragnvald;
Houltz, Ylva;
Li, J;
Lockowandt, C;
Henriksson, K.J..
(2016)
XRMON-SOL: Isothermal equiaxed solidification of a grain refined Al-20 wt%Cu alloy.
Journal of Crystal Growth
Academic article
-
Sillekens, W.H.;
Casari, Daniele;
Mirihanage, Wajira U.;
Terzi, S;
Mathiesen, Ragnvald;
Salvo, L.
(2016)
The Use of In Situ X-ray Imaging Methods in the Research
and Development of Magnesium-Based Grain-Refined
and Nanocomposite Materials.
JOM
Academic article
-
Casari, Daniele;
Mirihanage, Wajira;
Falch, Ken Vidar;
Ringdalen, Inga Gudem;
Friis, Jesper;
Schmid-Fetzer, Rainer.
(2016)
α-Mg primary phase formation and dendritic morphology transition in solidification of a Mg-Nd-Gd-Zn-Zr casting alloy.
Acta Materialia
Academic article
-
Mathiesen, Ragnvald.
(2016)
Det europeiske superrøntgenanlegget ESRF under oppgradering.
Fra Fysikkens Verden
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
Academic article
-
Falch, Ken Vidar;
Detlefs, Carsten;
Michiel, Marco Di;
Snigireva, Irina;
Snigirev, Anatoly;
Mathiesen, Ragnvald.
(2016)
Correcting lateral chromatic aberrations in non-monochromatic X-ray
microscopy.
Applied Physics Letters
Academic article
-
Murphy, Andrew G.;
Mathiesen, Ragnvald;
Houltz, Ylva;
Li, J.;
Lockowandt, C;
Henriksson, K.
(2016)
Direct observation of spatially isothermal equiaxed solidification of an Al–Cu alloy in microgravity onboard the MASER13 sounding rocket.
Journal of Crystal Growth
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
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
Academic article
-
Mirihanage, Wajira;
Michiel, Marco Di;
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
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
Academic article
-
Reiten, Andreas;
Chernyshov, Dmitry;
Mathiesen, Ragnvald.
(2015)
Nebula: Reconstruction and visualization of scattering data in reciprocal space.
Journal of Applied Crystallography
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
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
Academic article
-
Mirihanage, Wajira;
Falch, Ken Vidar;
Snigireva, Irina;
Snigirev, A;
Li, Yanjun;
Arnberg, Lars.
(2014)
Retrieval of three-dimensional spatial information from fast in situ two-dimensional synchrotron radiography of solidification microstructure evolution.
Acta Materialia
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
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
Reader opinion piece
-
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
Academic article
-
Høydalsvik, Kristin;
Fløystad, Jostein Bø;
Zhao, Tiejun;
Esmaeili, Morteza;
Diaz, Ana;
Andreasen, Jens Wenzel.
(2014)
In situ X-ray ptychography imaging of high-temperature CO2 acceptor particle agglomerates.
Applied Physics Letters
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
Academic article
-
Liotti, E;
Lui, A;
Vincent, R.;
Kumar, S;
Guo, Z;
Connolley, T.
(2014)
A synchrotron X-ray radiography study of dendrite fragmentation induced by a pulsed electromagnetic field in an Al-15Cu alloy.
Acta Materialia
Academic article
-
Mirihanage, Wajira;
Michel, Marco Di;
Reiten, Andreas;
Arnberg, Lars;
Dong, Hongbiao;
Mathiesen, Ragnvald.
(2014)
Time-resolved X-ray diffraction studies of solidification microstructure evolution in welding.
Acta Materialia
Academic article
-
Nguyen-Thi, Henri;
Reinhart, Guillaume;
Salloum-Abou-Jaoudé, Georges;
Browne, David;
Murphy, Anthony G.;
Houltz, Ylva.
(2014)
XRMON-GF experiments devoted to the in situ X-ray radiographic observation of growth process in microgravity conditions.
Microgravity, science and technology
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
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
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
Academic article
-
Liotti, E;
Lui, A;
Vincent, R.;
Kumar, S.;
Guo, Z;
Connolley, T.
(2013)
A Synchrotron X-ray Radiography Investigation of Induced Dendrite Fragmentation in Al-15wt%Cu.
Materials Science Forum
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
Academic article
-
Nguyen-Thi, H;
Reinhart, G;
Jaoude, G.S. Abou;
Mathiesen, Ragnvald;
Zimmermann, Gerhard;
Houltz, Y.
(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
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
Academic article
-
Nguyen-Thi, H;
Salvo, L;
Mathiesen, Ragnvald;
Arnberg, Lars;
Billia, B;
Suery, M.
(2012)
On the interest of synchrotron X-ray imaging for the study of solidification in metallic alloys.
Comptes rendus. Physique
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
Academic article
-
Mathiesen, Ragnvald;
Arnberg, Lars;
Li, Yanjun;
Meier, Vivienne;
Schaffer, Paul;
Snigireva, Irina.
(2011)
X-Ray Videomicroscopy Studies of Eutectic Al-Si Solidification in Al-Si-Cu.
Metallurgical and Materials Transactions A
Academic article
-
Nguyen-Thi, H;
Bogno, A;
Reinhart, G;
Billia, B;
Mathiesen, Ragnvald;
Zimmermann, Gerhard.
(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)
Academic article
-
Rakete, Christoph;
Baumbach, C;
Goldschmidt, A;
Samberg, D;
Schroer, C.G.;
Breede, F.
(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
Academic article
-
Anawati, Ms;
Diplas, Spyridon;
Holme, Børge;
Solberg, Jan Ketil;
Mathiesen, Ragnvald;
Walmsley, John.
(2011)
Surface Characterization of Heat Treated AlPbCu Model Alloys.
Journal of the Electrochemical Society
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2010)
In-situ Investigation of Liquid-Liquid Phase Separation in Hypermonotectic Alloys.
Materials Science Forum
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
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
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars.
(2010)
In situ investigations of liquid-liquid phase separation in hypermonotectic alloys.
Materials Science Forum
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
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
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
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
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
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
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
Academic article
-
Tucho, Wakshum Mekonnen;
Venvik, Hilde Johnsen;
Walmsley, John C;
Stange, M;
Ramachandran, Amutha;
Mathiesen, Ragnvald.
(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
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
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
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
Academic article
-
Ratke, Lorenz;
Gandin, Charles Andre;
Mathiesen, Ragnvald;
Rappaz, Michel;
Rex, Stephan.
(2008)
Materials Solidification Physics in Space.
EurophysicsNews
Article in business/trade/industry journal
-
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
Academic article
-
Schaffer, Paul;
Mathiesen, Ragnvald;
Arnberg, Lars;
Sabatino, Marisa Di;
Snigirev, Anatoly.
(2008)
In situ investigation of spinodal decomposition in hypermonotectic Al–Bi and Al–Bi–Zn alloys.
New Journal of Physics
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
Academic article
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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
Academic article
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Mathiesen, Ragnvald;
Arnberg, Lars.
(2005)
Stray crystal formation in Al-20wt.% Cu studied by synchrotron X-ray video microscopy.
Materials Science & Engineering: A
Academic article
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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
Academic article
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Birkedal, H;
Madsen, Dennis;
Mathiesen, Ragnvald;
Knudsen, K;
Weber, HP;
Pattison, P.
(2004)
The charge density of urea from synchrotron diffraction data.
Acta Crystallographica Section A: Foundations of Crystallography
Academic article
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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.
?
Academic article
Part of book/report
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Mathiesen, Ragnvald;
Arnberg, Lars.
(2008)
X-Ray Imaging of Solidification Processes and Microstructure Evolution.
Academic chapter/article/Conference paper
Report
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Falch, Ken Vidar;
Mathiesen, Ragnvald.
(2017)
High-energy X-ray Transmission Microscopy based on Compound Refractive Lenses.
Norges teknisk-naturvitenskapelige universitet
Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
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Zha, Min;
Li, Yanjun;
Mathiesen, Ragnvald;
Roven, Hans Jørgen.
(2014)
Development and characterizationof high solid solution Al-Mg alloysand an immiscible Al-Bi alloyprocessed by ECAP and annealing.
Norges teknisk-naturvitenskapelige universitet
Doktoravhandlinger ved NTNU, 1503-8181 (2014:149)
Doctoral dissertation
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Brataas, Arne;
Mathiesen, Ragnvald;
Grande, Tor;
Roven, Hans Jørgen;
Grepstad, Jostein;
Echtermeyer, Andreas.
(2013)
Enabling technologies at NTNU; materials science and engineering.
NTNU
NTNU
Report
Outreach
2025
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Academic lectureBugten, Andreas Voll; Sabatino, Marisa Di; Li, Yanjun; Miranda, Leander Edward Michels Brito; Bjørge, Ruben; Mathiesen, Ragnvald. (2025) On the graphite protrusions observed in boron-contaminated spheroidal graphite cast irons. SFI PhysMet Consortium meeting , Sunndalsøra 2025-05-21 - 2025-05-22
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LectureGhaderi, Amir; Stapnes, Andreas S.; Laubo, Sami; Bjørkvik, Bård Johan Arnt; Mathiesen, Ragnvald; Birkeland, Kristoffer. (2025) In-situ pore-scale contact angle measurement using x-ray µCT imaging: technique and applications to CO₂ Storage. The 13th Trondheim CCS Conference (TCCS-13) , Trondheim 2025-06-16 - 2025-06-19
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Academic lectureBugten, Andreas Voll; Sabatino, Marisa Di; Li, Yanjun; Arnberg, Lars Erik; Miranda, Leander Edward Michels Brito; Mathiesen, Ragnvald. (2025) Effect of B and Cu on Spheroidal Graphite Iron Microstructure. SFI PhysMet RA3 meeting 2025-03-27 - 2025-03-27
2024
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Academic lectureLi, Yanjun; Xu, Yijiang; Mathiesen, Ragnvald. (2024) Understanding heterogeneous nucleation and predicting grain size in wire and arc additive manufacturing of steels with inoculation. 44th Risø International Symposium on Materials Science , Risø, Copenhagen 2024-09-02 - 2024-09-06
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Academic lectureLi, Yanjun; Xu, Yijiang; Mathiesen, Ragnvald. (2024) Understanding the grain structure development during normal solidification and additive manufacturing. 19th International Conference on Aluminium Alloys, ICAA19 , Atlanta 2024-06-23 - 2024-06-27
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LectureGhaderi, Amir; Stapnes, Andreas S.; Laubo, Sami; Bjørkvik, Bård Johan Arnt; Mathiesen, Ragnvald; Birkeland, Kristoffer. (2024) Robust In-situ Contact Angle Measurements with Confidence Estimation for X-ray Micro-CT Data. AGU2024 , Washington D.C., USA 2024-12-09 - 2024-12-13
2023
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PosterJaiswal, Mukul; Silva, Melissa Costa Campino E; Younas, Daniyal; Mathiesen, Ragnvald; Chattopadhyay, Basab; Breiby, Dag Werner. (2023) X-Ray Microscopy of Marine Organisms. 2nd Annual TNNN Conference 2023 , University of South-Eastern Norway, Vestfold 2023-06-21 - 2023-06-23
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PosterStickland, Joe; Younas, Daniyal; Hageberg, Ingvild Uri; Mathiesen, Ragnvald; Breiby, Dag Werner; Chattopadhyay, Basab. (2023) Exploration of Advanced Complementary Imaging Probes. EXCITE network Conference , University of Granada 2023-11-08 - 2023-11-09
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Academic lectureMirzaei, Fazel; Mathiesen, Ragnvald; Anders, Kaestner; Chattopadhyay, Basab; Breiby, Dag Werner. (2023) Ice lens dynamics in soil unveiled by neutron tomography. Norwegian NanoSymposium 2023 , Trondheim 2023-11-28 - 2023-11-29
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PosterSilva, Melissa Costa Campino E; Jaiswal, Mukul; Stickland, Joe; Younas, Daniyal; Mathiesen, Ragnvald; Chattopadhyay, Basab. (2023) Computational bio-microscopy using X-rays and visual light. Sensor Tech Day , Labsenteret auditorium, Øya, NTNU 2023-04-26 - 2023-04-26
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PosterStickland, Joe; Younas, Daniyal; Hageberg, Ingvild Uri; Chushkin, Yuriy; Zontone, Federico; Mathiesen, Ragnvald. (2023) Coherent X-ray diffraction imaging for nanoscale structure analysis. TNNN Conference 2023 , University of South-Eastern Norway, Vestfold 2023-06-21 - 2023-06-23
2022
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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. (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
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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
2019
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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 lectureMürer, Fredrik Kristoffer; Chattopadhyay, Basab; Madathiparambil, Aldritt Scaria; Tekseth, Kim Robert Bjørk; Michiel, Marco Di; Mathiesen, Ragnvald. (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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Academic lectureMathiesen, Ragnvald. (2019) X-ray imaging - towards studies of condensed matter at the mesoscale. Invitert foredrag , Stavanger 2019-02-15 - 2019-02-15
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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 , Kaliningrad 2019-08-26 - 2019-08-29
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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 , Boston, MA 2019-12-01 - 2019-12-06
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PosterMürer, Fredrik Kristoffer; Chattopadhyay, Basab; Madathiparambil, Aldritt Scaria; Tekseth, Kim Robert Bjørk; Michiel, Marco Di; Mathiesen, Ragnvald. (2019) Orientational imaging of bone and cartilage using small- and wide-angle X-ray scattering. Nordic Workshop on Scattering from Soft Matter (NSSM 2019) , Århus 2019-01-08 - 2019-02-09
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PosterMürer, Fredrik Kristoffer; Chattopadhyay, Basab; Madathiparambil, Aldritt Scaria; Tekseth, Kim Robert Bjørk; Michiel, Marco Di; Mathiesen, Ragnvald. (2019) 3D imaging of bone and cartilage by X-ray phase-contrast and orientational diffraction tomography. ESRF User Meeting , Grenoble 2019-02-04 - 2019-02-06
2018
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Academic lectureMathiesen, Ragnvald. (2018) In-situ X-ray imaging of evolving solidification microstructures. Invitert foredrag , Dalian 2018-07-16 -
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Academic lectureMathiesen, Ragnvald. (2018) On the application of in-situ X-ray imaging techniques in solidification science. Invitert foredrag , Shenyang 2018-07-06 - 2018-07-06
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Academic lectureMathiesen, Ragnvald. (2018) In-situ X-ray imaging of evolving solidification microstructures. Invitert foredrag , Changchun 2018-07-17 - 2018-07-17
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Academic lectureMathiesen, Ragnvald. (2018) In-situ X-ray studies of evolving solidification microstructures. Invitert foredrag , Shenyang 2018-07-13 - 2018-07-13
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PosterZhang, Qiuyuan; Polikarpov, Maxim; Klimova, Nataliya; Larsen, Helge Bøvik; Mathiesen, Ragnvald; Emerich, Hermann. (2018) Glitch spectroscopy of X-ray compound refractive lenses. Poster 2018-02-05 - 2018-02-07
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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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InterviewSund, Steinar; Breiby, Dag Werner; Mathiesen, Ragnvald. (2018) Store ambisjoner for røntgenlaser. Aftenposten Vitenskap Aftenposten Vitenskap [Journal] 2018-01-20
2017
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InterviewMathiesen, Ragnvald; Idsø, Øyvind. (2017) Denne drypper nesten aldri. Hver gang den gjør det, jubler forskerne. Dagbladet Dagbladet [Journal] 2017-05-17
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Academic lectureBrowne, D. J.; Garcia-Moreno, F; Nguyen-Thi, H.; Zimmermann, G.; Kargl, F.; Mathiesen, Ragnvald. (2017) Overview of In Situ X-Ray Studies of Light Alloy Solidification in Microgravity. TMS 2017 , 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. (2017) Morphological Transition of a-Mg Dendrites During Near-Isothermal Solidification of a Mg–Nd–Gd–Zn–Zr Casting Alloy. TMS 2017 , San Diego 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 , Gradermoen 2017-06-06 - 2017-06-07
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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) , Beaumont Estate, Old Windsor, UK 2017-07-25 - 2017-07-28
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Academic lectureNguyen-Thi, Henri; Browne, David J.; Zimmermann, Gerhard; Reinhart, Guillaume; Murphy, Andrew G; Salloum-Abou-Jaoudé, Georges. (2017) Overivew of In Situ X-ray Studies of Metal Alloy Solidification in Microgravity Conditions - The XRMON Project. Solidification Processing 2017 (SP17) , Beaumont Estate, Old Windsor, UK 2017-07-25 - 2017-07-29
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Academic lectureCasari, Daniele; Mirihanage, Wajira; Falch, Ken Vidar; Ringdalen, Inga Gudem; Friis, Jesper; Schmid-Fetzer, Rainer. (2017) Morphological Transition of alpha-Mg Dendrites during Near-Isothermal Solidification of an Mg-Nd-Gd-Zn-Zr Casting Alloy. Solidification Processing 2017 (SP17) , Beaumont Estate, Old Windsor, UK 2017-07-25 - 2017-07-29
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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) , 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 (HXTM). SINTEF MC group seminar, Material physics , Trondheim 2017-10-19 - 2017-10-19
2016
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PosterFalch, Ken Vidar; Mathiesen, Ragnvald. (2016) Polychromatic synchrotron radiation x-ray microscopy. SCANDEM , 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 , København 2016-09-15 - 2016-09-16
2015
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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; Michiel, Marco Di; 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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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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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) 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) 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) 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 2014-06-15 - 2014-06-19
2013
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Academic lectureMathiesen, Ragnvald. (2013) Time-resolved X-ray diffraction and imaging studies of liquid->solid phase transformation. Instituttseminar , 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
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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 , 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 , Kaliningrad 2013-10-03 - 2013-10-07
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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 lectureHøydalsvik, Kristin; Fløystad, Jostein Bø; Zhao, Tiejun; Esmaeili, Morteza; Diaz, Ana; Andreasen, Jens Wenzel. (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
2012
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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 , 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 , Trondheim 2012-05-09 - 2012-05-10
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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 , Skepparholmen 2012-05-23 - 2012-05-24
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Academic lectureReinhart, G; Nguyen-Thi, H; Bogno, A; Billia, B; Houltz, Y; Loth, K. (2012) X-RAY RADIOGRAPHIC OBSERVATION OF DIRECTIONAL SOLIDIFICATION UNDER MICROGRAVITY: XRMON-GF EXPERIMENTS ON MASER12 SOUNDING ROCKET MISSION. TMS Annual Meeting , San Antonio, Texas 2012-03-11 - 2012-03-15
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Academic lectureFløystad, Jostein Bø; Esmaeili, Morteza; Høydalsvik, Kristin; Mathiesen, Ragnvald; Andreasen, Jens Wenzel; Rønning, Magnus. (2012) Towards 3D imaging of working catalyst nanoparticles. HYBRIS: HYbrid Beamline for In Situ 3D Resonant Imaging and Spectroscopy , Technical University of Denmark (DTU) 2012-12-12 - 2012-12-12
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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 , Orlando 2012-03-11 - 2012-03-15
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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) Synchrotron radiation as a tool in material science and engineering. Leading Edges in Welding - Summer School in Modelling of Welding , Granta Park, Cambridge 2012-07-30 - 2012-08-02
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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 , Schladming 2012-06-17 - 2012-06-22
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Academic lectureFløystad, Jostein Bø; Esmaeili, Morteza; Høydalsvik, Kristin; Diaz, Ana; Mathiesen, Ragnvald; Rønning, Magnus. (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; Diaz, Ana; Mathiesen, Ragnvald; Rønning, Magnus. (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; Böttiger, Arvid P.L.; Høydalsvik, Kristin; Diaz, Ana; Mathiesen, Ragnvald. (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 lectureMathiesen, Ragnvald; Arnberg, Lars. (2012) X-radiographic video microscopy studies of alloy solidification processes. Norwegian Synchrotron and Neutron User Meeting 2012-01-30 - 2012-01-31
2011
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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
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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 2011-11-16 - 2011-11-16
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PosterHøydalsvik, Kristin; Esmaeili, Morteza; Fløystad, Jostein Bø; Granlund, Håvard; Buset, Ole Tore; Mathiesen, Ragnvald. (2011) GAXS – a multipurpose instrument for X-ray scattering experiments. GISAXS 2011 , HASYLAB 2011-10-10 - 2011-10-12
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Academic lectureMathiesen, Ragnvald. (2011) Studies of solidification microstructure evolution in metals by synchrotron experiments. Metallurgmøtet, Stockholm 2011 , KTH Stockholm 2011-01-19 - 2011-01-20
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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 , 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. (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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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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Academic lectureMathiesen, Ragnvald. (2011) X-radiographic video microscopy studies of alloy solidification processes. Instituttseminar, Dept. Mat. Eng. and Mat. Sci., Univ. Queensland , Brisbane 2011-05-31 - 2011-05-31
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 , Yokohama 2010-09-06 - 2010-09-09
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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; Arnberg, Lars. (2010) X-radiographic video microscopy studies of alloy solidification processes. Deutsche Physikalische Gesellschaft Spring Meeting , Regensburg 2010-03-22 - 2010-03-26
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Academic lectureMathiesen, Ragnvald. (2010) Synchrotron radiation - opportunities in material science. Hero-m Summer School , Tallberg 2010-06-28 - 2010-07-01
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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 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) , Sapporo 2010-02-03 - 2010-02-05
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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) , Sapporo 2010-02-03 - 2010-02-05
2009
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Academic lectureMathiesen, Ragnvald. (2009) In situ X-ray videomicroscopy on evolving alloy solidification microstructures. Instituttseminar , Lausanne 2009-07-01 -
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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 lectureMathiesen, Ragnvald; Arnberg, Lars. (2009) Real-time X-ray imaging of diffusive and convective mass transport in alloy solidification processing. MaxLab User Meeting , Lund 2009-11-02 - 2009-11-04
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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 2009-12-15 - 2009-12-15
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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 , San Francisco 2009-02-15 - 2009-02-19
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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 , San Francisco 2009-02-15 - 2009-02-19
2007
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Academic lectureMathiesen, Ragnvald. (2007) Solidification Processing of Metals studied by in-situ X-ray video microscopy. Instituttseminar , Brisbane 2007-10-18 - 2007-10-18
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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 , 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 , Grenoble 2007-11-05 - 2007-11-05