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Mechanical properties and microstructure of powder metallurgy Ti-xNb-yMo alloys for implant materials

journal contribution
posted on 2015-12-25, 00:00 authored by K A Nazari, A Nouri, Tim HilditchTim Hilditch
In this study, a series of Ti-xNb-yMo (x = 5-40 wt.% in 5 wt.% increments; and y = 3, 5, 10 wt%) alloys were fabricated by powder metallurgy and studied with respect to their microstructures, compressive mechanical properties and hardness. Increases in Nb and Mo content led to decreases in compressive and yield strengths, elastic modulus and hardness of the sintered alloys. Among the studied alloys, Ti-10Nb-3Mo alloy exhibited the optimum combination of strength and ductility. Alloys with a lower amount of Nb (≤ 25 wt.%) and Mo (≤ 5 wt.%) developed Widmanstätten structure, while further increase in Nb and Mo additions led to the microstructure predominantly consisting of β phase with varying regions of α + β phase. The effects of sintering temperature on elastic modulus and hardness were also investigated for Ti-xNb-3Mo alloys.

History

Journal

Materials and design

Volume

88

Pagination

1164 - 1174

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0264-1275

eISSN

1873-4197

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2016, Elsevier