ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Study of the influence of Zr on the mechanical properties and functional response of Ti-Nb-Ta-Zr-O alloy for orthopedic applications

Acharya, Srijan and Panicker, Arpana Gopi and Laxmi, Devara Vijaya and Suwas, Satyam and Chatterjee, Kaushik (2019) Study of the influence of Zr on the mechanical properties and functional response of Ti-Nb-Ta-Zr-O alloy for orthopedic applications. In: MATERIALS & DESIGN, 164 .

[img]
Preview
PDF
Mat_Des_164_2019.pdf - Published Version

Download (4MB) | Preview
Official URL: https://doi.org/10.1016/j.matdes.2018.107555

Abstract

In Ti-Nb-Ta-Zr based beta-titaniumalloys intended for orthopedic applications, Zr does not affect the stability of low modulus beta-phase, unlike Nb and Ta. The present study attempts to investigate the influence of Zr on the overall mechanical and functional responses of a Ti-Nb-Ta-Zr-O alloy in contrast to a new Ti-Nb-Ta-O alloy. In each material, different crystallographic textures were produced by varying the processing route. While both alloys were found to show low elastic modulus values due to their beta-only microstructures, Ti-Nb-Ta-O alloy had lower elastic modulus because of its favorable crystallographic orientation caused by absence of Zr. The tensile strength values were remarkably high for both due to the presence of interstitial oxygen. The hardening effect of Zr was also evident from the higher strength of Ti-Nb-Ta-Zr-O as compared to Ti-Nb-Ta-O alloy. Although the corrosion resistance and in vitro biological behavior of the two alloys were satisfactory, the Ti-Nb-Ta-Zr-O alloy showed lower corrosion rate and improved osteoblast attachment than the Ti-Nb-Ta-Oalloy. Thus, whereas the two alloys show promising performance in terms of their mechanical and functional response, presence of Zr marginally improves the performance in the Ti-Nb-Ta-Zr-O for orthopedic applications. (C) 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to ELSEVIER SCI LTD
Keywords: Titanium alloys; Biomaterials; Mechanical properties; Texture; Corrosion; Biocompatibility
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 29 Jan 2019 09:50
Last Modified: 29 Jan 2019 09:50
URI: http://eprints.iisc.ac.in/id/eprint/61578

Actions (login required)

View Item View Item