Martensitic transformation and magnetic properties in ferromagnetic shape memory alloy Ni43Mn46Sn11-xSix

被引：22
|
作者：
Liu, Zhuhong [1 ]
Wu, Zhigang [2 ]
Yang, Hong [2 ]
Liu, Yinong [2 ]
Wang, Wenhong [3 ]
Ma, Xingqiao [1 ]
Wu, Guangheng [3 ]
机构：
[1] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China
[2] Univ Western Australia, Sch Mech & Chem Engn, Crawley, WA 6009, Australia
[3] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
来源：
INTERMETALLICS | 2011年 / 19卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Magnetic intermetallics; Martensitic transformations; Heat treatment; Magnetic properties; Thermal stability; BEHAVIOR;
D O I：
10.1016/j.intermet.2011.06.007
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This study investigated the effects of Si addition and heat treatment on the martensitic transformation and magnetic properties of Ni43Mn46Sn11-xSix (x = 1, 2, 3) alloys. The martensitic transformation temperatures were found to increase with increasing Si content in the alloy. A magnetic field-induced martensite-to-austenite transformation was found in Ni43Mn46Sn10Si1. Ageing of the Ni43Mn46Sn10Si1 alloy at 673 K resulted in the formation of a (Mn,Ni)-SiSn precipitate. The precipitate contains very low Sn content, causing the increase of the Sn content in the matrix phase and a decrease of martensitic transformation temperature. Ageing at 573 K is found to increase the Curie temperature and the saturation magnetization. This is attributed to the increase of atomic ordering of the matrix. Solution treatment of the aged samples at 1073 K was effective to restore the original transformation behaviour and magnetic properties. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1605 / 1611
页数：7
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