Martensitic transformation and shape memory effect of a Ni-Fe-Ga polycrystalline alloy

被引：11
|
作者：
Chen, F [1 ]
Meng, XL
Cai, W
Zhao, LC
Wu, GH
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Chinese Acad Sci, State Key Lab Magnetism, Inst Phys, Beijing 100080, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 302卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Ni-Fe-Ga alloys shape memory effect; martensitic transformation; transformation strain;
D O I：
10.1016/j.jmmm.2005.10.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The martensitic transformation and shape memory effect of Ni-23.9 wt%-Fe-28.7 wt%Ga polycrystalline alloy are studied in the present paper. It is shown that martensitic transformation temperatures and its reverse transformation temperatures are all raised by annealing treatment. A large reversible transformation strain, about 2100ppm, is obtained in Ni-23.9wt%-Fe-28.7wt%Ga polyerystalline alloy due to martensitic transformation and its reverse transformation. This transformation strain is also increased by the external magnetic field. It is believed that the effect of field on the preferential orientation of martensitic variants when transforming increases the transformation strain. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：459 / 462
页数：4
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