Combined experimental and theoretical study on the effect of Nb content on martensitic transformation of NbRu shape memory alloys

作     者：谭昌龙 蔡伟 田晓华 

作者机构：College of Applied ScienceHarbin University of Science and Technology School of Materials Science and EngineeringHarbin Institute of Technology 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2010年第19卷第3期

页      面：426-431页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project supported by the Youth Top-notch Innovative Talents Program of Harbin University of Science and Technology 

主　　题：high-temperature shape memory alloy NbRu electronic structure martensitic transformation 

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 βphase. The results show that an increase in Nb content increases the stability of Nbso＋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.