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

页码：1605 / 1611

页数：7

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