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Investigation on the micro-deformation characteristics of porous NiTi shape memory alloy using SEM Moire method
Jiang Haichang; Du Hua; Xie Huimin; Rong Lijian
Corresponding AuthorRong Lijian(ljrong@imr.ac.cn)
2006-11-01
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume42Issue:11Pages:1153-1157
AbstractThe 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.
Keywordporous NiTi alloy SEM Moire method compressive property self-propagation high-temperature synthesis
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000242356500007
PublisherSCIENCE CHINA PRESS
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/88457
Collection中国科学院金属研究所
Corresponding AuthorRong Lijian
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Tsing Hua Univ, Dept Engn & Mech, Beijing 100084, Peoples R China
Recommended Citation
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.
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