Magnetic and mechanical properties of FeNiCoTi magnetic shape memory alloy

被引：32

作者：

Hayashi, R ^{[1
]}

Murray, SJ ^{[1
]}

Marioni, M ^{[1
]}

Allen, SM ^{[1
]}

O'Handley, RC ^{[1
]}

机构：

[1] MIT, Cambridge, MA 02139 USA

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2000年 / 81卷 / 1-3期

关键词：

martensite; twin boundaries; aging; shape memory; magnetic shape memory; active materials;

D O I：

10.1016/S0924-4247(99)00127-2

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

FeNiCoTi is a promising candidate to show the magnetic shape memory (MSM) effect in an alloy with a high saturation magnetization and low cost. Material properties in this alloy can be controlled through both composition and heat treatment, and the effects of both have been studied. The effects of Ni3Ti precipitation are explored by subjecting samples to a range aging treatments to control the size and number of precipitates. Ni3Ti precipitates affect martensite transitions and mechanical properties. Samples of various compositions and heat treatments have been tested for microstructural, magnetic, and mechanical properties. Aging treatments have been shown to raise the martensite temperature by as much as 100 degrees C. The phase transformation from austenite to martensite was shown to raise the saturation magnetization from 100 to 150 emu/g. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：219 / 223

页数：5

共 11 条

[1] Symmetry, texture and the recoverable strain of shape-memory polycrystals [J].