Ab initio study of metastability in refractory metal based systems

被引:50
作者
Berne, C
Pasturel, A
Sluiter, M
Vinet, B
机构
[1] Commissariat Energie Atom, CEREM, Dept Etud Materiaux, F-38054 Grenoble 09, France
[2] CNRS, Lab Phys & Modelisat Milieux Condenses, F-38042 Grenoble 09, France
[3] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 9808577, Japan
关键词
D O I
10.1103/PhysRevLett.83.1621
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The interplay between local atomic environment and phase stability properties for tetrahedrally close packed (tcp) structures in transition metals has been examined using first-principles methods. The most probable transitory metastable tcp phases solidifying from undercooled transition metal melts and the sequence as a function of composition of tcp phases observed in the phase diagrams of many transition metal alloys are shown to have a common origin. These phenomena are explained in terms of atomic coordination and level splitting of the d-like states.
引用
收藏
页码:1621 / 1623
页数:3
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