Microstructure, martensitic transformation and shape memory effect of Ni38Co12Mn41In9 alloy

被引：11
作者：
Yang, Shuiyuan [1 ]
Su, Yu [1 ]
Wang, Cuiping [1 ]
Zhu, Jiahua [1 ]
Liu, Xingjun [1 ]
机构：
[1] Xiamen Univ, Dept Mat Sci & Engn, Coll Mat, Xiamen 361005, Peoples R China
来源：
MATERIALS LETTERS | 2013年 / 108卷
基金：
中国国家自然科学基金;
关键词：
Shape memory materials; Microstructure; Martensitic transformation; X-ray techniques; Thermomechanical test; FIELD-INDUCED STRAINS; PHASE-TRANSITIONS; NI-GA; MAGNETOSTRICTION; BEHAVIOR; TI;
D O I：
10.1016/j.matlet.2013.07.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the microstructure, martensitic transformation and shape memory effect of Ni38CO12 Mn41In9 alloy were investigated. It was found that Ni38Co12Mn41In9 alloy exhibited a two-phase microstructure consisting of martensite and gamma phase. The martensitic and austenitic transformation temperatures were 65 degrees C and 122 degrees C. Results showed that, although Ni38Co12Mn41In9 alloy had a mass of gamma phase, almost perfect shape memory effects could be obtained resulting from a small grain size and circularly shaped of gamma phase. The largest shape memory effect increased to 5.4% with 100% of shape recovery rate during the second thermomechanical process. Meanwhile, a 0.8% of two-way shape memory effect was observed due to the growth of favorably oriented martensite variants during thermomechanical process. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：215 / 218
页数：4
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