Mechanical Properties of Ti-Fe-Sn Biomedical Alloys with or without Aging Treatment

Hideki Hosoda; Kenta Kasuya; Masaki Tahara; Tomonari Inamura; Shuichi Miyazaki

doi:10.4028/www.scientific.net/MSF.783-786.2423

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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Mechanical Properties of Ti-Fe-Sn Biomedical...

Mechanical Properties of Ti-Fe-Sn Biomedical Alloys with or without Aging Treatment

Abstract:

In order to develop new β (bcc) Ti alloys, the Ti-Fe-Sn system was focused and phase constitution, microstructure, mechanical properties of Ti-5mol%Fe-6mol%Sn and Ti-6mol%Fe-3mol%Sn were clarified in addition to aging effect. It was estimated by differential scanning calorimetry (DSC) that α phase is formed at temperature from 773-779K and that β transus temperature is 1019K in both the alloys. X-ray diffraction analysis revealed that, in both alloys, β single phase is formed after the solution treatment (ST) at 1273K followed by water quenching, while α phase is formed after the aging at 773K and 873K for 3.6ks. The formation of α phase is also confirmed by optical microscopy. The volume fraction of α phase reaches to 90% in Ti-5Fe-6Sn and 80% in Ti-6Fe-3Sn after the aging at 873K for 3.6ks. The 0.2% proof stress was increased by aging at 873K from 550MPa to 650MPa in Ti-5Fe-6Sn and 500MPa to 690MPa in Ti-6Fe-3Sn. Besides, apparent Young’s modulus measured by dynamic mechanical analysis was raised by the aging treatment. These changes in the mechanical properties were discussed in connection with α phase precipitation.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

2423-2428

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.2423

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Online since:

May 2014

Authors:

Hideki Hosoda, Kenta Kasuya*, Masaki Tahara, Tomonari Inamura, Shuichi Miyazaki

Keywords:

Aging, Mechanical Property, Precipitation, Ti-Fe-Sn

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