Micromechanical study of formation and evolution of martensite for Cu-Al-Ni single crystal by moire interferometry

被引：3

作者：

Fang, DN ^{[1
]}

Liu, J ^{[1
]}

Xu, G ^{[1
]}

Dai, FL ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Engn Mech, Beijing 100084, Peoples R China

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2000年 / 33卷 / 01期

关键词：

D O I：

10.1016/S0167-8442(99)00050-6

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The basic properties of pseudoelasticity of Cu-Al-Ni single crystal are studied to analyze the morphology associated with the formation and evolution of martensite and the shape memory recovery process at different temperatures. Use is made of a multifunctional macro-micro moire interferometry measurement system. The beta(1) to beta(1)' phase changes are identified with the stress-induced transformation of a Cu-13.7%Al-4.18%Ni (wt%) alloy. The invariant plane between the martensite and the parent phase is shown directly by fringe patterns. It is found that martensite appears in the shape of bands or thin plates on the surface of the specimen. The formation of martensite is a very rapid process and martensite 'jumps' out until the specimen is completely transformed into a single variant. The results reveal the mechanism and process of stress-type and temperature-induced martensitic transformation. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：49 / 55

页数：7

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