Investigation of the phase evolution in a super-elastic NiTi shape memory alloy (50.7 at.%Ni) under extensional load with synchrotron radiation

被引：60

作者：

Schmahl, WW ^{[1
]}

Khalil-Allafi, J

Hasse, B

Wagner, M

Heckmann, A

Somsen, C

机构：

[1] Ruhr Univ Bochum, Inst Geol, D-44780 Bochum, Germany

[2] DESY, HASYLAB, D-2000 Hamburg, Germany

[3] Ruhr Univ Bochum, Inst Werkstoffe, D-44780 Bochum, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 378卷 / 1-2期

关键词：

super-elastic NiTi; synchrotron radiation; diffraction imaging; Luders-band;

D O I：

10.1016/j.msea.2003.11.081

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Inhomogeneous strain distribution associated with stress induced transformation and shear-band formation in super-elastic NiTi is investigated by diffraction with synchrotron radiation and diffraction imaging. We observe a large displacement of the austenite (110) diffraction peak as a function of tensile strain. This indicates a significant load transfer on residual austenite grains within the martensite matrix of a Luders-like shear transformation band. A distinct stress state occurs at the interface between the shear-band and the surrounding austenite. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：81 / 85

页数：5

共 8 条

[1] A TRANSFORMATION FOR ORDERING MULTISPECTRAL DATA IN TERMS OF IMAGE QUALITY WITH IMPLICATIONS FOR NOISE REMOVAL [J].