Mechanical deformation and tensile super-elastic behaviors of a Ti-Mo based shape memory alloy

Jie Song; Xiaoning Zhang; Zhiguo Fan; Chaoying Xie; M. H. Wu

doi:10.1117/12.881851

27 April 2011 Mechanical deformation and tensile super-elastic behaviors of a Ti-Mo based shape memory alloy

Jie Song, Xiaoning Zhang, Zhiguo Fan, Chaoying Xie, M. H. Wu

Proceedings Volume 7977, Active and Passive Smart Structures and Integrated Systems 2011; 79772K (2011) https://doi.org/10.1117/12.881851
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

Ni-free shape memory alloys are promising functional materials for medical applications. A newly developed Ti-Mo based shape memory alloy shows superelasticity after thermomechanical treatment. However, the microstructure evolution and precipitation during thermomechanical processes are still not well understood. In the present paper, compressive deformation behavior at a series of temperatures of 298K - 973K and tensile deformation behavior of the alloy after aged at 573K - 973K have been investigated systematically. It is found that the compressive yield stress and ultimate compressive strength change with the deformation temperature. The ultimate tensile strength and yield stress of aged specimens also change with the aging temperature following a non-linear relationship. Microstructures of aged specimens as well as effects of lattice softening and aging-induced precipitates on the deformation behavior have been investigated and discussed.

Citation Download Citation

Jie Song, Xiaoning Zhang, Zhiguo Fan, Chaoying Xie, and M. H. Wu "Mechanical deformation and tensile super-elastic behaviors of a Ti-Mo based shape memory alloy", Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 79772K (27 April 2011); https://doi.org/10.1117/12.881851

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