Gao, J., Knowles, A.J., Guan, D. orcid.org/0000-0002-3953-2878 et al. (1 more author) (2019) ω phase strengthened 1.2GPa metastable β titanium alloy with high ductility. Scripta Materialia, 162. pp. 77-81. ISSN 1359-6462
Abstract
This paper provides a novel approach for exploiting ω phase strengthening in a metastable β titanium alloy while retaining high ductility. The addition of 1 wt% Fe into our previously designed Ti-7Mo-3Cr alloy can efficiently control the growth of ω phase following air-cooling, resulting in a ultrahigh yield strength (Rp0.2of 1210 MPa) with large ductility (εf of 0.15). Microstructural analysis of deformed alloys showed that the growth of ω phase in the air-cooled Ti-7Mo-3Cr-1Fe alloy modified the deformation mechanism from {332} twinning and dislocation slip, in the water-quenched alloy, to localized dislocation plasticity in ω-void channels.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 Published by Elsevier Ltd on behalf of Acta Materialia Inc. This is an author produced version of a paper subsequently published in Scripta Materialia. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Metastable beta titanium alloy; ω phase; Strengthening; Yield strength |
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: | 02 Nov 2020 12:23 |
Last Modified: | 25 Jun 2023 22:29 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.scriptamat.2018.10.043 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:167453 |