1996•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access

Thermomechanical properties due to martensitic and R-phase transformations of TiNi shape memory alloy subjected to cyclic loadings

Hisaaki TOBUSHI, S. Yamada, Takashi Hachisuka, Akira Ikai, K. Tanaka

Abstract

The thermomechanical properties of shape memory effect and superelasticity due to the martensitic transformation and the R-phase transformation of TiNi shape memory alloy were investigated experimentally. The transformation line, recovery stress and fatigue property due to both transformations were discussed for cyclic deformation. The thermomechanical properties due to the R-phase transformation were excellent for deformation with high cycles.

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Key concepts: Pseudoelasticity, Shape-memory alloy, Materials science, Alloy, Diffusionless transformation, Phase (matter), Martensite, R-Phase