Xu, Y., Gao, J., Huang, Y. et al. (1 more author) (2020) A low-cost metastable beta Ti alloy with high elastic admissible strain and enhanced ductility for orthopaedic application. Journal of Alloys and Compounds, 835. 155391. ISSN 0925-8388
Abstract
In this work, a low-cost biomedical titanium alloy Ti–5Mo–Fe–3Sn (atomic percent) was successfully developed. The microstructure, tensile properties and deformation behaviour were investigated at ambient temperature. It was found that the combined addition of Sn and Fe suppressed the formation of athermal omega phase and introduced solid solution strengthening. An excellent combination of low elastic modulus (52 GPa) and high yield strength (740 MPa) was achieved, leading to a high elastic admissible strain (1.42%). Transmission electron microscopy results revealed that with an increase in tensile strain, the {332}<113> twin system was initiated first, and then secondary {332}<113> twinning and ternary {112}<111> twinning were also observed. The evolution of multi-twin system during deformation was responsible for the enhanced strain hardening rate and plasticity (elongation ∼30%).
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license https://creativecommons.org/licenses/by/4.0/ |
Keywords: | Metastable β titanium alloys; Young’s modulus; Elastic admissible strain; Twinning |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Funding Information: | Funder Grant number Engineering and Physical Sciences Research Council EP/L025213/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 11 May 2020 11:40 |
Last Modified: | 07 Jul 2021 11:08 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.jallcom.2020.155391 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:160379 |