Martensitic transformation and microstructure in Nb-Ru-Fe shape memory alloys

被引：6
|
作者：
Gao, Xin [1 ]
Cai, Wei [1 ]
Zheng, Y. F. [1 ]
Zhao, L. C. [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 438卷
关键词：
Nb-Ru-Fe alloy; high-temperature shape memory alloy; microstructure; martensitic transformation;
D O I：
10.1016/j.msea.2006.02.079
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The martensitic transformation behavior and microstructure in Nb-Ru-Fe alloys have been investigated by means of differential scanning calorimetry, X-ray diffraction, optical microscopy and transmission electron microscopy. It is shown that two-step phase transformation of beta -> beta' -> beta" occurs during cooling from high temperature to room temperature. The monoclinic crystal structure remains unchanged with the addition of Fe, but all lattice parameters of the martensite unit cell decrease with increasing Fe content. The crystal symmetry of martensite is Cmmm. The beta" martensite variants exhibit self-accommodation morphology and the substructure is determined to be (101) type I twin. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：862 / 864
页数：3
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