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A Quantitative Micro-Deformation Field Study of Shape Memory Alloys by High Sensitivity Moiré

Published online by Cambridge University Press:  10 February 2011

Q. P. Sun ,
Terry T. Xu ,
X. Y. Zhang  and
P. Tong
Q. P. Sun
Affiliation:
Department of Mechanical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, [email protected]
Terry T. Xu
Affiliation:
Department of Mechanical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, [email protected]
X. Y. Zhang
Affiliation:
Department of Mechanical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, [email protected]
P. Tong
Affiliation:
Department of Mechanical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, [email protected]
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Abstract

Quantitative micro-macro combined experimental research on the deformation field of single crystal CuAINi shape memory alloy (SMA) is performed by using high sensitivity Moiré technique. The study is focused on the micro-macro correspondence of the deformation behavior of single crystal uniaxial tensile specimen during stress induced forward and reverse transformations. The aim of the experiment is to quantitatively relate the macroscopic applied stress with the deformation field in the mesoscale. The large deformation due to the lattice distortion during transformation was first successfully recorded by Moiré interferometry. Some important microstructure-related deformation features of single crystal SMA under uniaxial tension are first reported.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 459: Symposium Y – Materials for Smart Systems II , 1996 , 495
Copyright
Copyright © Materials Research Society 1997

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References

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