Shape Memory and Superelastic Alloys: Technologies and by Kiyoshi Yamauchi, Ichizo Ohkata, Koichi Tsuchiya, Shuichi

By Kiyoshi Yamauchi, Ichizo Ohkata, Koichi Tsuchiya, Shuichi Miyazaki

Form reminiscence and superelastic alloys own houses now not found in usual metals that means that they are often used for various purposes. form reminiscence and superelastic alloys: purposes and applied sciences explores those functions discussing their key good points and advertisement functionality. Readers will gain information of the present and power destiny functions of form reminiscence alloys.  half one covers the houses and processing of form reminiscence impression and superelasticity in alloys for useful makes use of with chapters protecting the fundamental features of Ti-Ni-based and Ti-Nb-based form reminiscence and superelastic (SM/SE) alloys, the improvement and commercialization of TiNi and Cu-based alloys, business processing and gadget components, layout of SMA coil springs for actuators prior to a last evaluate at the improvement of SM and SE functions. half introduces SMA software applied sciences with chapters investigating SMAs in electric purposes, hot-water offer, building and housing, cars and railways and aerospace engineering earlier than the homes, processing and purposes of Ferrous (Fe)-based SMAs. half three specializes in the functions of superelastic alloys and explores their capabilities within the clinical, telecommunications, garments, activities and rest industries. The appendix in short describes the historical past and job of the organization of form reminiscence Alloys (ASMA).

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Additional info for Shape Memory and Superelastic Alloys: Technologies and Applications (Woodhead Publishing in Materials)

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The shape memory effect is observed for the Ti–26Nb alloy deformed at temperatures between 193 and 273 K. Superelastic behavior is seen at 293 K, although the shape recovery was incomplete. For the Ti–27Nb alloy, superelastic behavior is observed at temperatures between 193 and 293 K. The Ti–28Nb alloy exhibited good superelastic behavior at 193 K. The residual strain increased with increasing temperature. It is also seen that the apparent yield stress, which corresponds to the stress for the inducing martensitic transformation, increases with increasing temperature.

11 Effect of cyclic deformation on the stress–strain curves of Ti–Ni alloys subjected to various heat treatments. % Ni alloy which was tested at 293 K. mode subjected to such a material in use is commonly a loading–unloading cycling without or with heating after each unloading. % Ni alloy. The data are represented by two straight lines. The deformation mode for each region is different form the others; the short life region is for cyclic stress-induced transformation, while the long-life region is for cyclic elastic deformation.

Superelastic behavior is seen at 293 K, although the shape recovery was incomplete. For the Ti–27Nb alloy, superelastic behavior is observed at temperatures between 193 and 293 K. The Ti–28Nb alloy exhibited good superelastic behavior at 193 K. The residual strain increased with increasing temperature. It is also seen that the apparent yield stress, which corresponds to the stress for the inducing martensitic transformation, increases with increasing temperature. % Nb alloys. © Woodhead Publishing Limited, 2011 34 Shape memory and superelastic alloys Stress (MPa) Clausius–Clapeyron relationship.

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