In recent years, we have deeply investigated the solidification processes of liquid metals of Al, Ag, Cu, Mg 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. By using the visualizing method, the formation, evolution and hereditary mechanisms of nano-clusters, especially, under high pressures the large-scale microstructurel evolution, the crystallization and the hereditary mechanisms during their solidification processes have been clearly analyzed and described by the cluster type index method (CTIM) proposed by authors. Recently, many important results obtained. Highly interesting, for liquid Ni, it is found for the first time that there is an important phase transformation point from FCC to BCC structures between 20 ~ 22.5GPa during the solidification processes from the same initial liquid system at the same cooling rate. And the effect of increasing pressure is similar to that of decreasing cooling rate for the phase transformation of microstructures during solidification process of liquid metal Ni system, though they have different concrete effecting mechanisms.

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). 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”. He found the evident heredity effects of micro-clusters existing in the solidification process of liquid metal. He has proposed the cluster-type index method(CTIM) for describing the nano-cluster structures formed in the solidification process of metals, opening a new way to analyze the formation and evolution of microstructures in materials. 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. He has been many times invited to Australia, United States, Britain, Canada, Italy, Japan and other countries for academic exchanges, and to give special reports and keynote talks at international academic meetings.