Suárez Fernández, D., Wynne, B.P., Crawforth, P. orcid.org/0000-0002-1235-8494 et al. (2 more authors) (2021) The effect of forging texture and machining parameters on the fatigue performance of titanium alloy disc components. International Journal of Fatigue, 142. 105949. ISSN 0142-1123
Abstract
The Mechanisms of fatigue failure in Ti-6Al-2Sn-4Zr-6Mo forged discs are investigated: the effects of forging and machining operations on fatigue are decoupled. A four-point bend fatigue testing approach enabled the crack initiation and propagation characteristics to be studied at multiple locations around the disc periphery. Fatigue performance variation (of ~60%) at different positions, and crack initiation and propagation behaviour were linked to the heterogeneous crystallographic texture - developed during upstream forging. Downstream machining processes were found to increase fatigue life, regardless of the cutting speed. However, circumferential fatigue heterogeneity, inherent from the forging stage was still evident even after machining.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/). |
Keywords: | Titanium alloys; Forging; Machining; Low cycle fatigue |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 13 Jan 2021 15:49 |
Last Modified: | 13 Jan 2021 15:49 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.ijfatigue.2020.105949 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:169811 |