Large reversible magnetostrain of a Ni30Cu8Co12Mn37Ga13 single crystal

被引：13

作者：

Hua, Hui ^{[1
]}

Wang, Jingmin ^{[1
]}

Jiang, Chengbao ^{[1
]}

Xu, Huibin ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Key Lab Aerosp Mat & Performance, Minist Educ, Beijing 100191, Peoples R China

来源：

SCRIPTA MATERIALIA | 2016年 / 124卷

关键词：

Magnetic shape memory alloys; Magnetic-field-induced reverse martensitic transformation; Thermo-mechanical training; Magnetostrain; SHAPE-MEMORY ALLOYS; MAGNETIC-FIELD; STRAIN; MICROSTRUCTURE;

D O I：

10.1016/j.scriptamat.2016.07.017

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The reversible magnetostrain was investigated in a Ni30Cu8Co12Mn37Ga13 single crystal undergoing the magnetic -field-induced reverse martensitic transformation. A 0.14% reversible magnetostrain was monitored in the as grown single crystal and it decreased to 0.08% after magnetic field cycling. By 5 cycles of thermo-mechanical training under 38 MPa, the reversible magnetostrain could be effectively increased to 0.47%, which is the largest value as reported in the samples without the constraint of external stress. It was revealed that the preferential orientation of the martensitic variants was formed after thermo-mechanical training, thus contributing to the large reversible magnetostrain. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：142 / 145

页数：4

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