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Microstructure, Texture and Mechanical Properties after Cold Working and Annealing in a Biomedical Ti-Nb-Ta Alloy

Acharya, Srijan and Gupta, Praveen and Chatterjee, Kaushik and Suwas, Satyam (2018) Microstructure, Texture and Mechanical Properties after Cold Working and Annealing in a Biomedical Ti-Nb-Ta Alloy. In: 10th International Conference on Processing and Manufacturing of Advanced Materials, 2018, 9-13 July, 2018, Paris; France, pp. 2465-2470.

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Official URL: https://doi.org/10.4028/www.scientific.net/MSF.941...

Abstract

beta titanium alloys, comprising alloying elements such as Nb, Ta, Zr, are considered promising materials for use in orthopedic applications, as the lower elastic modulus of these alloys, reduces the chance of implant failure caused by stress shielding. The mechanical behavior of these alloys depend on the composition as well as the stability of the phases. In the present study, the effect of cold rolling and subsequent annealing on the microstructure, texture and mechanical behavior of a Ti-Nb-Ta-O alloy has been investigated. Structural characterization was done using x-ray diffraction (XRD) and optical microscopy. Mechanical properties were evaluated by estimation of hardness and elastic modulus. The results show that, (1) the alloy contains single-phase beta microstructure in both deformed as well as annealed condition with no evidence of deformation induced phase transformation, (2) the microstructures of cold worked alloy become increasingly inhomogeneous with dominance of shear bands at higher rolling strains, (3) high value of hardness to modulus ratio could be obtained in the present alloy due to stability of beta phase and interstitial strengthening.

Item Type: Conference Proceedings
Additional Information: 10th International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications (THERMEC), Cite Sci Paris, Paris, FRANCE, JUL 09-13, 2018
Keywords: beta titanium; biomedical implant; processing; cold rolling; annealing; plastic deformation; microstructure; hardness
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 18 Jul 2019 06:00
Last Modified: 18 Jul 2019 06:00
URI: http://eprints.iisc.ac.in/id/eprint/62912

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