Childerhouse, T. orcid.org/0000-0001-9669-3806, M’Saoubi, R., Franca, L. et al. (3 more authors) (2022) The influence of machining induced surface integrity and residual stress on the fatigue performance of Ti-6Al-4V following polycrystalline diamond and coated cemented carbide milling. International Journal of Fatigue, 163. 107054. ISSN 0142-1123
Abstract
Accurate fatigue life predictions of titanium alloy components requires an understanding of how the machining affected metallurgical and micro-mechanical subsurface condition influences fatigue crack nucleation and growth. This study investigates the influence of surface integrity features generated during carbide and high-speed polycrystalline diamond machining on the fatigue behaviour of coarse and fine-grained Ti-6Al-4V. Mechanically induced compressive residual stresses, promoted by higher feed rates and the larger cutting edge radii of carbide tools, have been demonstrated to provide an overriding enhancing effect on fatigue life due to crack initiation suppression and reducing the deleterious effects of microstructural deformation and surface imperfections.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | Finish machining; Crack initiation and growth; Tool wear; Titanium alloys; Powder metallurgy |
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/L016257/1 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/S013377/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 20 Jul 2022 09:55 |
Last Modified: | 20 Jul 2022 09:55 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.ijfatigue.2022.107054 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:189203 |