Assessment of tension-compression asymmetry of NiTi using circular bulge testing of thin plates

被引：24
|
作者：
Grolleau, V. [2 ]
Louche, H. [3 ]
Delobelle, V. [1 ]
Penin, A. [2 ]
Rio, G. [2 ]
Liu, Y. [4 ]
Favier, D. [1 ]
机构：
[1] Univ Grenoble, CNRS, F-38041 Grenoble 09, France
[2] Univ Europeenne Bretagne, LIMATB, F-56321 Lorient, France
[3] Univ Montpellier 2, CNRS, LMGC, F-34095 Montpellier, France
[4] Univ Western Australia, Sch Mech & Chem Engn, Crawley, WA 6009, Australia
来源：
SCRIPTA MATERIALIA | 2011年 / 65卷 / 04期
关键词：
NiTi alloy; Shape memory alloys; Superelasticity; Tension-compression asymmetry; Bulge test; INDUCED MARTENSITIC-TRANSFORMATION; LUDERS-LIKE DEFORMATION; SHAPE-MEMORY ALLOYS; SINGLE-CRYSTAL; STRESS; BEHAVIOR; SHEAR;
D O I：
10.1016/j.scriptamat.2011.05.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Tension-compression asymmetry in a polycrystalline superelastic NiTi thin sheet is studied by means of circular diaphragm bulging test and tensile tests. Tensile tests along the rolling and transverse directions allow evaluation of planar anisotropy. The equibiaxial tensile stress-strain curve at the centre of the bulge specimen is calculated from pressure and kinematical full field measurements. The deviatoric stress tensor for this stress state is identical to that of uniaxial compression in thickness. Asymmetric behaviour similar to in-plane tension-compression asymmetry is observed. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：347 / 350
页数：4
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