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Mechanical and Superelastic Properties of Au-51Ti-18Co Biomedical Shape Memory Alloy Heat-Treated at 1173 K to 1373 K

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Abstract:

The effect of heat treatment temperature from 1173 K to 1373 K for 3.6 ks on mechanical and superelastic properties of an Ni-free Au-51Ti-18Co alloy (mol%) was investigated. The stress for inducing martensitic transformation (SIMT) and the critical stress for slip deformation (CSS) slightly decrease with increasing the heat–treatment temperature. Regardless of heat–treatment temperature, good superelasticity was definitely recognized with the maximum shape recovery ratio up to 95 % and 4 % superelastic shape recovery strain. As the mentioned reasons, the Au-51Ti-18Co alloy is promising for practical biomedical applications.

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Periodical:

Advances in Science and Technology (Volume 97)

Pages:

141-146

DOI:

https://doi.org/10.4028/www.scientific.net/AST.97.141

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Online since:

October 2016

Authors:

Taywin Buasri*, Hyunbo Shim, Masaki Tahara, Tomonari Inamura, Kenji Goto, Hiroyasu Kanetaka, Yoko Yamabe-Mitarai, Hideki Hosoda

Keywords:

AuTiCo, Biomedical Shape Memory Alloy, Heat-Treatment, Mechanical Properties, Superelasticity

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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