中国物理B ›› 2010, Vol. 19 ›› Issue (3): 37101-037101.doi: 10.1088/1674-1056/19/3/037101
谭昌龙1, 田晓华1, 蔡 伟2
Tan Chang-Long(谭昌龙)a)†, Cai Wei(蔡伟)b), and Tian Xiao-Hua(田晓华)a)
摘要: The effect of Nb content on the martensitic transformation of NbRu high-temperature shape memory alloys is investigated by experiments and first-principles calculations. We calculate the lattice parameters, density of states, charge density, and heats of formation of Nb50+xRu50-x β phase. The results show that an increase in Nb content increases the stability of Nb50+xRu50-x β phase, leading to a significant decrease of the β to β' martensitic transformation temperature. In addition, the mechanism of the effects of Nb content on phase stability and martensitic transformation temperature is studied on the basis of electronic structure.
中图分类号: (Martensitic transformations)