Tensile Deformation and Lateral Strain of a TiNi Shape-Memory Alloy Wire

The tensile deformation properties due to the martensitic transformation of a TiNi shapememory alloy wire were investigated experimentally. The martensitic transformation started at a gripping part of a specimen due to stress concentration. During the propagation of the martensitic transformation, t...

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Bibliographic Details
Published inTransactions of the Japan Society of Mechanical Engineers Series A Vol. 64; no. 628; pp. 2970 - 2974
Main Authors HACHISUKA, Takashi, TOBUSHI, Hisaaki, HASHIMOTO, Takahiro, SHIMENO, Yoshirou
Format Journal Article
LanguageJapanese
Published The Japan Society of Mechanical Engineers 1998
Subjects
Lateral Strain
Martensitic Transformation
Poisson's Ratio
Rhombohedral-Phase Transformation
Shape Memory Alloy
Tensile Deformation
Titanium-Nickel Alloy
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Summary:The tensile deformation properties due to the martensitic transformation of a TiNi shapememory alloy wire were investigated experimentally. The martensitic transformation started at a gripping part of a specimen due to stress concentration. During the propagation of the martensitic transformation, the martensitic transformation started in the middle part of gauge length. The diameter decreased locally according to the propagation of the martensitic transformation. Poisson's ratio due to the martensitic transformation was 0.45. Poisson's ratio due to elastic deformation of a martensitic and a rhombohedral phase was 0.35.
ISSN:0387-5008
1884-8338
DOI:10.1299/kikaia.64.2970