Yanjun Li
Background and activities
Background:
Yanjun Li (Born 1970), professor of Physical Meallurgy. He obtained his Ph.D in Materials Science and Engineering (1997). He had worked as Research Metallurgist at Hydro Aluminium (2005-2007), and Senior Research Scientist at Group of Materials Physics, SINTEF M&K (2008-2013) before he joined NTNU as a full professor in 2013. In 2019, he worked as a Visiting Professor at the Department of Materials Science and Engineering, MIT, for 6 month.
Research Fields:
- Solidification and casting ;
- Homogenization, Precipitation strengthening, and phase transformation;
- SPD and bulk nc/UFG materials;
- Grain boundary engineering;
- Materials simualtion by first principles calculation
- Microstructure simulation models
- Advanced materials characterization ( SEM, (S)TEM, APT, EBSD and XRD)
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Administration:
- Scientific Director of Norwegian Laboratory of Mineral and Materials Characterization (MiMaC), a large scale national infrastructure funded by the Research Coucil of Norway. A series of state-of-the-art instrument have been invested, including LEAP 5000XS APT, FEG-EPMA, Automated Mineralogy System (AMS) and LA-ICP-MS, which are located at NTNU, NGU and SINTEF.
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Publication and citation:
Google Scholar profile: https://scholar.google.no/citations?user=dJgu35wAAAAJ&hl=en
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Present group members:
Researcher:
Postdoc:
Ph.D students:
- Simen Eliassen (Modelling the interaction between dislocations and grain boundaries in Mc-Si)
- Xuezhou Wang (Modelling of precipitation hardening behavior in 6xxx aluminium alloys)
- Hanne Sofie Marie Scisly Søreide (APT characterization of precipitation and phase transformation of metal alloys)
- Chunan Li (Atom clustering and precipitaiton behavior of 6xxx aluminium alloys)
Visiting Ph.D students
- Ruojin Zang (precipitation behavior of age hardening preciptations in 6xxx alloys)
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Former group members
Postdoc/researcher
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Aina Opsal Bakke (innovative approach for compound casting of Al/Al and Al/steel)
- Min Zha (Development of UFG and nano structured aluminium alloys by SPD)
- Shenbao Jin (Grain boundary engineering of Al and Ti alloys by dynamic plastic deformation)
- Feng Qian (Influence of impurity elements on preciptiation hardening in 3xxx and 6xxx alloys)
- Yuanyun Zhao (Develpment of metallic glass alloys for resonator applications )
- Dongdong Zhao (Modeling the precipitation behavior of precipitates from bulk to grain boudnaries in aluminium alloys)
- Yijiang Xu (Development of microstructure based electrical conductivity prediction model for 6xxx alloys)
- Eva Mørtsell (HRTEM characterization of precipitates, grain boundaries and phase transformaton)
Ph.D students
- Dongdong Zhao (DFT simulation on the inpurity segregation at defects in Al and Si alloys), 2014-2017
- Yijiang Xu (Experimental and numerical modelling study on the nucleation and grain growth of inoculated aluminium alloys), 2014-2017
- Hailong Jia (Engineering grain boudnary structuures of aluminium alloys and titanium by high strain and high strain rate deformation), 2014-2018
- Shubo Wang (Phase transformation of metal alloys under Electric current heating effect) 2016-2020
- Aina Opsal Bakke (Compound casting between Al and dissimillar metal alloys) 2017-2020
- Jiawei Yang (Melt filtration of aluminium alloys under the effect of grain refinement), 2017-2021
Vistinging PhD students
- Bijin Zhou (CSC Ph.D student, Cross grain boundary deformation transferring behavior of Mg alloys), 2019-2020
- Shiwei Pan (CSC Ph.D student, Dispersion hardening of aluminium alloys by Zr-containing dispersoids), 2019-2021
- Qingbo Yang (CSC Ph.D student, Precipitation behavior of Al-Cu-Li alloys), 2019-2020
Former visiting researchers:
- Dr. Yun Deng (University of Oxford)
- Dr. Hanka Becker ( TU Bergakademie Freiberg)
- Prof. Xiaosong Jiang (Southwest Jiaotong Unversity)
- Prof. Hongliang Zheng (Shandong University)
- Prof. Mingxiao Shi (Jiangsu University of Science and Technology)
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Courses
- MT8219 - Applied Electron Microscopy
- TMT4301 - Materials Characterization
- MT8218 - Advanced Materials Science
- MT8210 - Advanced Solidification Metallurgy
- TMT4166 - Experimental Materials Chemistry and Electrochemistry
- TMT4215 - Casting
- TMT4500 - Materials Technology, Specialization Project
Scientific, academic and artistic work
Displaying a selection of activities. See all publications in the database
Journal publications
- (2022) Effects of atom probe analysis parameters on composition measurement of precipitates in an Al-Mg-Si-Cu alloy. Ultramicroscopy. vol. 235.
- (2022) Developing ductile and isotropic Ti alloy with tailored composition for laser powder bed fusion. Additive Manufacturing. vol. 52.
- (2022) Effect of Inclusion and Filtration on Grain Refinement Efficiency of Aluminum Alloy. Metallurgical and Materials Transactions A. vol. 53 (3).
- (2022) The role of grain boundary plane in slip transfer during deformation of magnesium alloys. Acta Materialia. vol. 227.
- (2022) Dislocation behavior in a polycrystalline Mg-Y alloy using multi-scale characterization and VPSC simulation. Journal of Materials Science & Technology. vol. 98.
- (2021) Achieving high-strength metallurgical bonding between A356 aluminum and copper through compound casting. Materials Science & Engineering: A. vol. 810.
- (2021) Sn-Aided Joining of Cast Aluminum and Steel Through a Compound Casting Process. Metallurgical and Materials Transactions B. vol. 53.
- (2021) Microstructures and mechanical properties of nano-C and in situ Al2O3 reinforced aluminium matrix composites processed by equal-channel angular pressing. Journal of Alloys and Compounds. vol. 876.
- (2021) Synergistic strengthening by nano-sized α-Al (Mn, Fe) Si and Al3Zr dispersoids in a heat-resistant Al–Mn–Fe–Si–Zr alloy. Materials Science & Engineering: A. vol. 819.
- (2021) Synergistic effects of Cd, Si and Cr additions on precipitation strengthening and thermal stability of dispersoids in AA3003 alloy. Materials Science & Engineering: A. vol. 832.
- (2021) Hierarchical structure in Al-Cu alloys to promote strength/ductility synergy. Scripta Materialia. vol. 202.
- (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. vol. 854.
- (2021) The Interactions Between Oxide Film Inclusions and Inoculation Particles TiB2 in Aluminum Melt. Metallurgical and Materials Transactions B. vol. 52B.
- (2021) The Influences of Grain Refiner, Inclusion Level, and Filter Grade on the Filtration Performance of Aluminum Melt. Metallurgical and Materials Transactions B. vol. 52B.
- (2021) Stabilizing a severely deformed Al–7Mg alloy with a multimodal grain structure via Mg solute segregation. Journal of Materials Science & Technology. vol. 89.
- (2021) Prominent role of multi-scale microstructural heterogeneities on superplastic deformation of a high solid solution Al–7Mg alloy. International journal of plasticity. vol. 146.
- (2021) Facile synthesis of metal and alloy nanoparticles by ultrasound-assisted dealloying of metallic glasses. Journal of Materials Science & Technology. vol. 82.
- (2020) Formation and evolution of the interfacial structure in Al/steel compound castings during solidification and heat treatment. Journal of Alloys and Compounds. vol. 849.
- (2020) Interfacial Microstructure Formation in Al7SiMg/Cu Compound Castings. International Journal of metalcasting. vol. 15 (1).
- (2020) Enhanced nucleation and precipitation hardening in Al-Mg-Si(-Cu) alloys with minor Cd additions. Materials Science & Engineering: A. vol. 792.
- (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. vol. 832.
- (2020) Revealing the nucleation kinetics of primary Si particles in hypereutectic Al-Si alloys under the influence of P inoculation. Journal of Materials Science. vol. 55 (32).
- (2020) Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al–Cu alloy. Materials & design. vol. 186.
- (2020) Influence of grain refiners on the wettability of Al2O3 substrate by aluminum melt. Metallurgical and Materials Transactions B. vol. 52.
- (2020) Modelling the Age-Hardening Precipitation by a Revised Langer and Schwartz Approach with Log-Normal Size Distribution. Metallurgical and Materials Transactions A. vol. 51 (9).
- (2020) Laser welding of niobium to AISI 304 steel using a copper interlayer. Journal of Adhesion Science and Technology. vol. 34 (20).
- (2020) Facile fabrication of ultrathin freestanding nanoporous Cu and Cu-Ag films with high SERS sensitivity by dealloying Mg-Cu(Ag)-Gd metallic glasses. Journal of Materials Science & Technology. vol. 70.
- (2020) Revealing slip-induced extension twinning behaviors dominated by micro deformation in a magnesium alloy. International journal of plasticity. vol. 128.
- (2019) Microstructure in A356/AA6xxx after bimetallic casting with flux coating. IOP Conference Series: Materials Science and Engineering. vol. 529 (1).
- (2019) Effect of Mn and cooling rates on α-, β- and δ-Al–Fe–Si intermetallic phase formation in a secondary Al–Si alloy. Materialia. vol. 5.
- (2019) β- and δ-Al-Fe-Si intermetallic phase, their intergrowth and polytype formation. Journal of Alloys and Compounds. vol. 780.
- (2019) Influence of Cu addition on the heat treatment response of A356 foundry alloy. Materials Today Communications. vol. 19.
- (2019) Atomistic approach to simulate kink migration and kink-pair formation in silicon: The kinetic activation-relaxation technique. Physical review B (PRB). vol. 100 (15).
- (2019) Texture evolution of an Al-8Zn alloy during ECAP and post-ECAP isothermal annealing. Materials Characterization. vol. 155.
- (2019) Revealing abnormal {11-21} twins in commercial purity Ti subjected to split Hopkinson pressure bar. Journal of Alloys and Compounds. vol. 783.
- (2019) Non-steady 3D dendrite tip growth under diffusive and weakly convective conditions. Materialia. vol. 5.
- (2019) Precipitation in an A356 foundry alloy with Cu additions - A transmission electron microscopy study. Journal of Alloys and Compounds. vol. 785.
- (2019) Cu Interlayer-Induced High-Strength Laser-Welded AISI 304 Steel-Niobium Joint. Journal of materials engineering and performance (Print). vol. 28 (9).
- (2019) Accelerated recrystallization by electric current flash heating in cold-rolled Al-5Cu alloy under the influence of concurrent precipitation. Journal of Alloys and Compounds. vol. 811.
- (2019) Effect of Ag addition on the precipitation evolution and interfacial segregation for Al?Mg?Si alloy. Acta Materialia. vol. 180.
- (2019) Revealing the factors influencing grain boundary segregation of P, As in Si: Insights from first-principles. Acta Materialia. vol. 168.
- (2019) AlSi10Mg alloy nanocomposites reinforced with aluminum-coated graphene: Selective laser melting, interfacial microstructure and property analysis. Journal of Alloys and Compounds. vol. 792.
- (2018) Quantifying the grain boundary segregation strengthening induced by post-ECAP aging in an Al-5Cu alloy. Acta Materialia. vol. 155.
- (2018) Microstructures and mechanical properties of Cu/Ti3SiC2/C/graphene nanocomposites prepared by vacuum hot-pressing sintering and hot isostatic pressing. Composites Part B: Engineering. vol. 141.
- (2018) Grain boundary segregation in Pd-Cu-Ag alloys for high permeability hydrogen separation membranes. Membranes. vol. 8 (3).
- (2018) Enhanced dispersoid precipitation and dispersion strengthening in an Al alloy by microalloying with Cd. Acta Materialia. vol. 157.
- (2018) Improving ageing kinetics and precipitation hardening in an Al-Mg-Si alloy by minor Cd addition. Materialia. vol. 4.
- (2018) Modelling microstructure evolution during casting, homogenization and ageing heat treatment of Al-Mg-Si-Cu-Fe-Mn alloys. Calphad. vol. 63.
- (2018) Revealing the heterogeneous nucleation behavior of equiaxed grains of inoculated Al alloys during directional solidification. Acta Materialia. vol. 149.
- (2018) A Thermodynamic Study on the Effect of Solute on the Nucleation Driving Force, Solid?Liquid Interfacial Energy, and Grain Refinement of Al Alloys. Metallurgical and Materials Transactions A. vol. 49 (5).
- (2018) Achieving dispersed fine soft Bi particles and grain refinement in a hypermonotectic Al–Bi alloy by severe plastic deformation and annealing. Scripta Materialia. vol. 155.
- (2018) Carbon segregation at Σ3 {1 1 2} grain boundaries in silicon. Computational Materials Science. vol. 143.
- (2018) Segregation of Mg, Cu and their effects on the strength of Al Σ5 (210)[001] symmetrical tilt grain boundary. Acta Materialia. vol. 145.
- (2017) The deformation and work hardening behaviour of a SPD processed Al-5Cu alloy. Journal of Alloys and Compounds. vol. 697.
- (2017) Heterogeneous nucleation and grain growth of inoculated aluminium alloys: An integrated study by in-situ X-radiography and numerical modelling. Acta Materialia. vol. 140.
- (2017) Lattice distortion induced site dependent carbon gettering at twin boundaries in silicon. Journal of Alloys and Compounds. vol. 712.
- (2017) Combined effect of Mg and vacancy on the generalized planar fault energy of Al. Journal of Alloys and Compounds. vol. 690.
- (2016) α-Mg primary phase formation and dendritic morphology transition in solidification of a Mg-Nd-Gd-Zn-Zr casting alloy. Acta Materialia. vol. 116.
- (2016) Formation of {11-21} twin boundaries in titanium by kinking mechanism through accumulative dislocation slip. Acta Materialia. vol. 120.
- (2016) Impurity effect of Mg on the generalized planar fault energy of Al. Journal of Materials Science. vol. 51 (14).
- (2015) Formation of incoherent deformation twin boundaries in a coarse-grained Al-7Mg alloy. Applied Physics Letters. vol. 107 (9).
- (2015) High ductility bulk nanostructured Al-Mg binary alloy processed by equal channel angular pressing and inter-pass annealing. Scripta Materialia. vol. 105.
- (2015) Microstructure evolution and mechanical behavior of a binary Al-7Mg alloy processed by equal-channel angular pressing. Acta Materialia. vol. 84.
- (2014) An extension of the Kampmann-Wagner numerical model towards as-cast grain size prediction of multicomponent aluminum alloys. Acta Materialia. vol. 71.
- (2014) Prediction of solute diffusivity in Al assisted by first-principles molecular dynamics. Journal of Physics: Condensed Matter. vol. 26 (2).
- (2014) Mackay icosahedron explaining orientation relationship of dispersoids in aluminium alloys. Acta Crystallographica Section B: Structural Science. vol. 70 (5).
- (2013) Dispersoid strengthening in AA3xxx alloys with varying Mn and Si content during annealing at low temperatures,. Materials Science & Engineering: A. vol. 567.
- (2013) Influence of dispersoids on microstructure evolution and work hardening of aluminium alloys during tension and cold rolling. Philosophical Magazine. vol. 93 (22).
- (2012) Precipitation of partially coherent alpha-Al(Mn,Fe)Si dispersoids and their strengthening effect in AA 3003 alloy. Acta Materialia. vol. 60 (3).
- (2012) Precipitation crystallography of plate-shaped Al-6(Mn,Fe) dispersoids in AA5182 alloy. Acta Materialia. vol. 60 (17).
- (2011) Quantitative analysis of grain refinement in titanium during equal channel angular pressing. Scripta Materialia. vol. 64 (9).
- (2011) X-Ray Videomicroscopy Studies of Eutectic Al-Si Solidification in Al-Si-Cu. Metallurgical and Materials Transactions A. vol. 42A (1).
- (2010) Faceted interfacial structure of {1011} twins in Ti formed during equal channel angular pressing. Scripta Materialia. vol. 62 (7).
- (2006) Influence of Cu on the mechanical properties and precipitation behavior of AlSi7Mg0.5 alloy during aging treatment. Scripta Materialia. vol. 54.
- (2004) The 1.54 µm photoluminescence from an (Er,Ge) co-doped SiO2 film deposited on Si by rf magnettron sputtering. Applied Physics Letters. vol. 85 (19).
- (2004) A eutectoid phase transformation for the primary intermetallic particle from Alm(Fe,Mn) to Al3(Fe,Mn)in AA5182 alloy. Acta Materialia. vol. 52 (10).
- (2004) Solidification structures and phase selection of iron-bearing eutectic particles in a DC-cast AA5182 alloy. Acta Materialia. vol. 52 (9).
- (2003) Evolution of eutectic intermetallic particles in DC-cast AA3003 alloy during heating and homogenization. Materials Science and Engineering. vol. A347.
- (2003) Quantitative study in the precipitation behavior of dispersoids in DC-cast AA3003 alloy during heating and homogenization. Acta Materialia. vol. 51.