Abstract
The present study investigated the effects of morphology of V nanowires on superelasticity of Ti46Ni44V10 alloy. The microstructure analysis revealed that the diameter of V nanowires decreased and the continuity improved with an increase in cold drawn deformation. The upper plateau stress decreased with the increase in annealing temperature and increased with the increase in cold working. Furthermore, the superelastic strain decreased with the increase in annealing temperature. However, it was independent of cold working. The stress hysteresis increased with the increase in area reduction, and the samples annealed at 400 °C exhibited a larger hysteresis than those annealed at 350 °C when the area reduction was more than 40%. Thus, we found that, the effects on superelasticity of Ti46Ni44V10 alloy were closely related to the morphology of V nanowires and the NiTi phase.
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