On the mechanical behavior of single crystal NiTi shape memory alloys and related polycrystalline phenomenon

被引:128
作者
Gall, K
Sehitoglu, H
Anderson, R
Karaman, I
Chumlyakov, YI
Kireeva, IV
机构
[1] Univ Illinois, Dept Mech & Ind Engn, Urbana, IL 61801 USA
[2] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA
[3] Siberian Phys & Tech Inst, Phys Plast & Strength Mat Lab, Tomsk 634050, Russia
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2001年 / 317卷 / 1-2期
基金
美国国家科学基金会;
关键词
cyclic loading; detwinning; NiTi single crystal; shape memory alloy; stress-strain asymmetry;
D O I
10.1016/S0921-5093(01)01183-2
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Room temperature monotonic and cyclic stress-strain curves for single crystal and polycrystalline NiTi shape memory alloys containing Ti3Ni4 precipitates are presented. The tensile and compressive single crystal results illustrate the importance of crystallographic texture, the unidirectional nature of the martensitic transformation, and martensite detwinning on tension-compression stress-strain asymmetry in polycrystalline NiTi. Moreover, results on the fatigue of NiTi single crystals demonstrate the fundamental characteristics of cyclic deformation in NiTi alloys and the importance of texture on the fatigue of polycrystalline NiTi. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:85 / 92
页数:8
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