Prof. Rang-Su Liu
Prof. Rang-Su Liu
Hunan University, China
Title: Formation, Evolution and Hereditary Mechanisms of Nano-Clusters During Solidification Processes of Liquid Metals and Alloys
In recent years, we have deeply investigated the solidification processes of liquid metals of Al, Ag, Cu, Na, Pb, Zn and alloys of Mg-Zn, Mg-Y, Al-Mg, Al-Zn, Ca-Zn by molecular dynamics simulation for the systems with different sizes of 100,000, 1,000,000 and 10.000,000 atoms, respectively. The formation, evolution and hereditary mechanisms of nano-clusters, especially, the microstructural evolution, the martensitic transformation (bcc–hcp and bcc–fcc), the crystallization and the hereditary mechanisms during their solidification processes have been clearly analyzed and described by the cluster type index method (CTIM, CTIM-2 and CTIM-3) proposed by authors recently. By using the visualizing method, the formation, evolution and hereditary processes of Nano-Clusters and Crystalline fashions during solidification processes have been clearly displayed. Many new results obtained.
Rang-su Liu, he graduated from Department of Physics of Hunan University. He is working in Department of Applied Physics of Hunan University and as a supervisor of Ph.D. students. Moreover, he is the director of Institute of Physics of Functional Material of HU, the member of Academic Council of the International Conference on Intelligent Processing and Manufacturing of Materials (IPMM) (for six consecutive –12 years). He has been awarded the special Chinese government allowance. He devoted to research works of metal physics, dislocation theory and phase transition theory, especially of the theoretical and experimental researches of “amorphous alloys” and “the solidification process of liquid metals”, in which he has been successful. He found the evident genetic effects of matrix microstructure clusters existing in the solidification process of liquid metal, providing the basis of simulating experiments for deep understanding the relations of macroscopic properties with microstructures and solidification processes of liquid metals. He has proposed an expression method –cluster-type index method(CTIM) for nano-cluster structures formed in the solidification process of metals, opening a new way to use central atom method to describe the evolution of microstructure of materials. He has been invited to Australia for collaborative research, to the United States, Britain, Canada, Italy and other countries for academic exchanges, and to make special reports and keynote talk at international academic meetings many times. He has published more than 160 research papers on well-known academic journals, such as Sci. Rep., Phys. Rev. B, Ann. Phys., J. Chem. Phys., J. Phys: Condens. Matter, J. Non-Cryst. Solids, and so on.