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Microstructure and mechanical properties of an austenite NiTi shape memory alloy treated with laser induced shock
Wang X(王曦); Xia WG(夏伟光); Wu XQ(吴先前); Wei YP(魏延鹏); Huang CG(黄晨光); Wang, X (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
2013-08-20
Volume578Pages:1-5
ISSN0921-5093
AbstractIn this study, microstructure and mechanical properties of an austenite NiTi alloy treated with laser shock peening (LSP) was investigated. It was found that the thickness of shock affected layer is about 250-300 μm. The surface hardness of the specimen is increased by approximately 10% after LSP. Laser induced shock introduces slightly residual compressive stress in the peened specimen. The superleastic stress-strain curves of the fully LSP processed NiTi material show no change in phase transition stress, about 100 MPa decrease in martensite yield stress, and a loss of maximum transition strain about 12% after LSP. The ultrahigh-strain-rate plastic deformation by LSP results in dislocation substructure and amorphization underneath the surface which are responsible for the hardness increase and superelastic strain loss.
KeywordLaser Shock Peening Shape Memory Alloy Plastic Deformation Amorphization Superelasticity
Subject Area冲击动力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000321595500001
Funding OrganizationNational Natural Science Foundation of China [11002150, 10972228]; Basic Research Equipment Project of Chinese Academy of Sciences [YZ200930]
DepartmentLMFS冲击与耦合效应(LHO)
Classification一类
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47438
Collection流固耦合系统力学重点实验室
Corresponding AuthorWang, X (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wang X,Xia WG,Wu XQ,et al. Microstructure and mechanical properties of an austenite NiTi shape memory alloy treated with laser induced shock[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2013,578:1-5.
APA Wang X,Xia WG,Wu XQ,Wei YP,Huang CG,&Wang, X .(2013).Microstructure and mechanical properties of an austenite NiTi shape memory alloy treated with laser induced shock.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,578,1-5.
MLA Wang X,et al."Microstructure and mechanical properties of an austenite NiTi shape memory alloy treated with laser induced shock".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 578(2013):1-5.
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