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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 409Cold Workability, Mechanical Properties,...

Cold Workability, Mechanical Properties, Pseoudoelastic and Shape Memory Response of Silver Added Ti-5Cr Alloys

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Abstract:

In order to develop new nickel-free biomedical Ti-based alloys, effect of silver additions on mechanical properties of Ti-5Cr (mol%) alloy was investigated. Cold workability of Ti-5Cr alloy was 5% in thickness reduction and the cold rolling reduction was improved to be 38% by 2mol% Ag addition and 96% by 4mol%Ag addition. The improvement was due to β phase stabilization. From the XRD results, α’ martensite was the dominant phase in Ti-5Cr-2Ag alloy and β phase was the dominant phase in Ti-5Cr-4Ag alloy. By tensile tests, Ti-5Cr-4Ag alloy showed good strength of 447 MPa in ultimate tensile strength (UTS) and ductility of 13% in fracture strain. Ti-5Cr-4Ag showed higher hardness of HV398 than Ti-5Cr-2Ag with HV288. The hardening by increase of Ag is probably due to the solid solution strengthening. By the cyclic loading-unloading tensile tests with a constant strain increment, Ti-5Cr-4Ag showed pseoudoelastic behavior. Ti-5Cr-4Ag also showed shape memory effect with 57% in shape recovery ratio. It is concluded that Ti-5Cr-4Ag is hopeful as a new non-allergic shape memory material for biomedical applications.

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THERMEC 2011 Supplement

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Periodical:

Advanced Materials Research (Volume 409)

Pages:

639-644

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.409.639

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Online since:

November 2011

Authors:

Abdul Wadood, Tomonari Inamura, Hideki Hosoda, Shuichi Miyazaki

Keywords:

Mechanical Property, Pseudoelasticity, Shape Memory Effects (SME), Ti-Cr-Ag

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