Thermal and stress-induced martensitic transformations in NiFeGa single crystals under tension and compression

被引：62

作者：

Hamilton, RF

Efstathiou, C

Sehitoglu, H

Chumlyakov, Y

机构：

[1] Univ Illinois, Dept Mech & Ind Engn, Urbana, IL 61801 USA

[2] Siberian Phys Tech Inst, Tomsk 634050, Russia

来源：

SCRIPTA MATERIALIA | 2006年 / 54卷 / 03期

基金：

美国国家科学基金会;

关键词：

shape memory; pseudoelasticity; critical stress; phase transformation; ferromagnetic shape memory alloy; single crystal;

D O I：

10.1016/j.scriptamat.2005.10.003

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Heat treatment and stress state effects on the martensitic transformation in [001] and [123] oriented single crystal Ni54Fe19Ga27 alloys are determined. Characteristic temperatures increase for longer aging times and higher hold temperatures. The non-aged [0 0 1] crystals exhibit the smallest stress hysteresis and lowest critical stress in tension. The experimental results are interpreted based on the role of ordering and the second phase on changes in transformation temperatures and hysteresis. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

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页码：465 / 469

页数：5

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