Deformation Mechanism and Stabilization of Martensite in TiNi Shape Memory Alloy

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	Deformation Mechanism and Stabilization of Martensite in TiNi Shape Memory Alloy
其他题名	Deformation Mechanism and Stabilization of Martensite in TiNi Shape Memory Alloy
	Wang Shuai 1; Tsuchiya Koichi 2; Wang Lei 1; Umemoto Minoru 3
	2010
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	26 期号:10 页码:936-940
摘要	The deformed microstructures of a TiNi shape memory alloy were investigated in present study to clarify the deformation mechanism It is found that the stress-strain curve was divided into three stages based on the deformation modes The cause of martensitic stabilization effect was also interpreted by paying special attention to the deformed microstructures Transmission electron microscopic examination revealed that at the early stage of deformation martensitic reorientation and compound twinning relieved some of the elastic strain energy stored in martensite, and this contributes to the martensitic stabilization effect However when deformation strain became larger, the density of dislocations increased correspondingly Antiphase boundaries were also found The degree of ordering was therefore decreased due to dislocations and antiphase boundaries So disordering was another cause of martensitic stabilization effect In the middle stage of deformation martensitic stabilization was attributed to the two reasons above
其他摘要	The deformed microstructures of a TiNi shape memory alloy were investigated in present study to clarify the deformation mechanism.It is found that the stress-strain curve was divided into three stages based on the deformation modes.The cause of martensitic stabilization effect was also interpreted by paying special attention to the deformed microstructures.Transmission electron microscopic examination revealed that at the early stage of deformation martensitic reorientation and compound twinning relieved some of the elastic strain energy stored in martensite,and this contributes to the martensitic stabilization effect.However,when deformation strain became larger,the density of dislocations increased correspondingly.Antiphase boundaries were also found.The degree of ordering was therefore decreased due to dislocations and antiphase boundaries.So disordering was another cause of martensitic stabilization effect.In the middle stage of deformation martensitic stabilization was attributed to the two reasons above.
关键词	NITI REORIENTATION TRANSFORMATION TWINS TiNi shape memory alloy Transmission electron microscopy Ordering Dislocation Martensitic transformation
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:4223899
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/157085
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.Natl Institute Mat Sci, Innovat Mat Engn Lab, Struct Funct Res Grp, Tsukuba, Ibaraki 3050047, Japan 3.Toyohashi University Technol, Dept Prod Syst Engn, Toyohashi, Aichi 4418580, Japan
推荐引用方式 GB/T 7714	Wang Shuai,Tsuchiya Koichi,Wang Lei,et al. Deformation Mechanism and Stabilization of Martensite in TiNi Shape Memory Alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2010,26(10):936-940.
APA	Wang Shuai,Tsuchiya Koichi,Wang Lei,&Umemoto Minoru.(2010).Deformation Mechanism and Stabilization of Martensite in TiNi Shape Memory Alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,26(10),936-940.
MLA	Wang Shuai,et al."Deformation Mechanism and Stabilization of Martensite in TiNi Shape Memory Alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 26.10(2010):936-940.