Compressive response of a single crystalline CoNiAl shape memory alloy

被引：67
作者：
Karaca, HE
Karaman, I [1 ]
Chumlyakov, YI
Lagoudas, DC
Zhang, X
机构：
[1] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA
[2] Siberian Phys Tech Inst, Tomsk 634050, Russia
[3] Texas A&M Univ, Dept Aerosp Engn, College Stn, TX 77843 USA
[4] Nitinol COE, Edwards LifeSci, Irvine, CA 92614 USA
来源：
SCRIPTA MATERIALIA | 2004年 / 51卷 / 03期
基金：
美国国家科学基金会;
关键词：
shape memory alloys; CoNiAl; martensitic phase transformation; pseudoelasticity;
D O I：
10.1016/j.scriptamat.2004.04.002
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effects of crystallographic orientation and temperature on pseudoelasticity and recoverable strain levels under constant stress are revealed for the Co-31at.%Ni-27at.%Al alloy single crystals under compression. The single crystals demonstrate a perfect pseudoelasticity at temperatures as high as 170 degreesC, recoverable transformation strains of 4% along the [100] orientation and 2.5% along the [123] orientation, small stress hysteresis (<40 MPa) and high strength level against dislocation formation. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：261 / 266
页数：6
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