Investigation on the micro-deformation characteristics of porous NiTi shape memory alloy using SEM Moire method

IMR OpenIR

	Investigation on the micro-deformation characteristics of porous NiTi shape memory alloy using SEM Moire method
	Jiang Haichang ; Du Hua ; Xie Huimin ; Rong Lijian
通讯作者	Rong Lijian(ljrong@imr.ac.cn)
	2006-11-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	42 期号:11 页码:1153-1157
摘要	The micro-deformation characteristics of porous NiTi shape memory alloy under compression load have been investigated using SEM Moire method. Strain field distribution, which was calculated from the changes of density and direction of moire at the margin and the center of pore wall, indicated that the failure of porous NiTi alloy can be attributed to the stress concentration near the margin of pore wall. During loading, the margin and center of pore wall endured both shear stress and compressive stress. The stress concentration was formed at the sharp-angled area of pore and induced the crack propagation from the margin of pore wall to the center along 45 degrees angle with the loading direction. Severe deformation occurred at the margin of pore wall after failure, however, the strains were slight at the center of pore wall. Based on the results of Moire, the compressive behavior characteristics of porous NiTi alloy were analyzed.
关键词	porous NiTi alloy SEM Moire method compressive property self-propagation high-temperature synthesis
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000242356500007
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/88459
专题	中国科学院金属研究所
通讯作者	Rong Lijian
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Tsing Hua Univ, Dept Engn & Mech, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Jiang Haichang,Du Hua,Xie Huimin,et al. Investigation on the micro-deformation characteristics of porous NiTi shape memory alloy using SEM Moire method[J]. ACTA METALLURGICA SINICA,2006,42(11):1153-1157.
APA	Jiang Haichang,Du Hua,Xie Huimin,&Rong Lijian.(2006).Investigation on the micro-deformation characteristics of porous NiTi shape memory alloy using SEM Moire method.ACTA METALLURGICA SINICA,42(11),1153-1157.
MLA	Jiang Haichang,et al."Investigation on the micro-deformation characteristics of porous NiTi shape memory alloy using SEM Moire method".ACTA METALLURGICA SINICA 42.11(2006):1153-1157.