The effect of Fe on the martensitic transformation of TaRu high-temperature shape memory alloys: A first-principles study

被引：6
作者：
Tan Chang-Long [1 ]
Tian Xiao-Hua [1 ]
Cai Wei [2 ]
机构：
[1] Harbin Univ Sci & Technol, Coll Appl Sci, Harbin 150080, Peoples R China
[2] Harbin Inst Technol, Dept Mat Phys & Chem, Harbin 150001, Peoples R China
来源：
CHINESE PHYSICS B | 2012年 / 21卷 / 05期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
shape memory alloys; TaRu; martensitic transformation; electronic structure; EQUIATOMIC TARU; MICROSTRUCTURE; SIMULATION;
D O I：
10.1088/1674-1056/21/5/057105
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The effect of Fe on the martensitic transformation of TaRu high-temperature shape memory alloys has been investigated using first-principles calculations. The site preference of Fe in TaRu alloys has been clarified for the first time, and the results show that Fe is predicted to occupy Ru sites. The addition of Fe increases the stability of the Ta50Ru50-xFex beta phase, leading to a significant decrease in the beta to beta' martensitic transformation temperature. In addition, the mechanism of the Fe alloying effect is explained on the basis of the electronic structure.
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页数：4
相关论文
共 21 条
[1]  
BEYER J, 1995, MATER RES SOC SYMP P, V360, P443
[2]   Molecular dynamics simulation of stress-induced martensitic phase transformation in NiAl [J].
Cao Li-Xia ;
Shang Jia-Xiang ;
Zhang Yue .
ACTA PHYSICA SINICA, 2009, 58 (10) :7307-7312
[3]   Effect of Fe addition on transformation temperatures and hardness of NiMnGa magnetic shape memory alloys [J].
Chen, F ;
Wang, HB ;
Zheng, YF ;
Cai, W ;
Zhao, LC .
JOURNAL OF MATERIALS SCIENCE, 2005, 40 (01) :219-221
[4]   First principles calculations on martensitic transformation and phase instability of Ni-Mn-Ga high temperature shape memory alloys [J].
Chen, Jie ;
Li, Yan ;
Shang, Jiaxiang ;
Xu, Huibin .
APPLIED PHYSICS LETTERS, 2006, 89 (23)
[5]   DISPLACIVE TRANSFORMATIONS IN NEAR-EQUIATOMIC NB-RU ALLOYS .2. ENERGETICS AND MECHANISM [J].
DAS, BK ;
STERN, EA ;
LIEBERMAN, DS .
ACTA METALLURGICA, 1976, 24 (01) :37-44
[6]   The shape memory effect in equiatomic TaRu and NbRu alloys [J].
Fonda, RW ;
Jones, HN ;
Vandermeer, RA .
SCRIPTA MATERIALIA, 1998, 39 (08) :1031-1037
[7]   Crystallography and microstructure of TaRu [J].
Fonda, RW ;
Vandermeer, RA .
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1997, 76 (01) :119-133
[8]  
Gao X, 2004, J MATER SCI TECHNOL, V20, P97
[9]   Effect of Ta content on martensitic transformation behavior of RuTa ultrahigh temperature shape memory alloys [J].
He, ZR ;
Zhou, JE ;
Furuya, Y .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 348 (1-2) :36-40
[10]  
Lindquist P., 1990, ENG ASPECTS SHAPE ME
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