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Deformation Mechanism and Stabilization of Martensite in TiNi Shape Memory Alloy
Alternative TitleDeformation Mechanism and Stabilization of Martensite in TiNi Shape Memory Alloy
Wang Shuai1; Tsuchiya Koichi2; Wang Lei1; Umemoto Minoru3
2010
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume26Issue:10Pages:936-940
AbstractThe 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
Other AbstractThe 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.
KeywordNITI REORIENTATION TRANSFORMATION TWINS TiNi shape memory alloy Transmission electron microscopy Ordering Dislocation Martensitic transformation
Indexed ByCSCD
Language英语
CSCD IDCSCD:4223899
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/157085
Collection中国科学院金属研究所
Affiliation1.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
Recommended Citation
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.
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