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A re-assessment of Ti-685 as a dwell sensitive titanium alloy and a definition for engineering relevant dwell behaviour

Martin Bache, Jing Li, Helen Davies Orcid Logo

International Journal of Fatigue, Volume: 178, Start page: 108008

Swansea University Authors: Martin Bache, Jing Li, Helen Davies Orcid Logo

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DOI (Published version): 10.1016/j.ijfatigue.2023.108008

Abstract

It is believed that the near-α titanium alloy Ti-685 was the first to demonstrate dwell sensitive fatigue behaviour whilst under engineering service as a gas turbine fan disc material. New fatigue data, micro-textural characterisation and fractography from a recent study which utilised remnant Ti-68...

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Published in: International Journal of Fatigue
ISSN: 0142-1123 1879-3452
Published: Elsevier BV 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa64765
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spelling v2 64765 2023-10-18 A re-assessment of Ti-685 as a dwell sensitive titanium alloy and a definition for engineering relevant dwell behaviour 3453423659f6bcfddcd0a716c6b0e36a Martin Bache Martin Bache true false 63decc944dd44c096082eea7cd16d3f3 Jing Li Jing Li true false a5277aa17f0f10a481da9e9751ccaeef 0000-0003-4838-9572 Helen Davies Helen Davies true false 2023-10-18 FGSEN It is believed that the near-α titanium alloy Ti-685 was the first to demonstrate dwell sensitive fatigue behaviour whilst under engineering service as a gas turbine fan disc material. New fatigue data, micro-textural characterisation and fractography from a recent study which utilised remnant Ti-685 specimens originally manufactured for previous laboratory campaigns based at Swansea dating back to the late 1980s are now reported. In isolation, the present results failed to demonstrate a significant dwell effect in either aligned or basketweave microstructural variants. On this occasion, the limited sensitivity to dwell loading was explained by the combination of heat treatment artifacts and selection of a relatively small test specimen geometry. However, the present data were also reviewed in the context of the wider fatigue database generated by multiple studies over the past fifty years. In combination, stress-life (SN) curves defined the magnitude in applied peak stress necessary to demonstrate a dwell effect in this alloy. Ultimately, this facilitated a fundamental definition of dwell sensitivity that is relevant to the engineering community. Journal Article International Journal of Fatigue 178 108008 Elsevier BV 0142-1123 1879-3452 Ti-685, fatigue, dwell sensitivity, microstructurally textured regions, quasi-cleavage facets 31 1 2024 2024-01-31 10.1016/j.ijfatigue.2023.108008 http://dx.doi.org/10.1016/j.ijfatigue.2023.108008 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University SU Library paid the OA fee (TA Institutional Deal) Swansea University 2023-11-20T13:36:07.7004768 2023-10-18T08:34:05.3951053 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Martin Bache 1 Jing Li 2 Helen Davies 0000-0003-4838-9572 3 64765__29003__139f7a83fa1d46b4bbfb6afda221bf94.pdf 64765.pdf 2023-11-13T13:29:48.5050345 Output 11147226 application/pdf Version of Record true © 2023 The Authors. Published by Elsevier Ltd. Distributed under the terms of a Creative Commons Attribution 4.0 International License (CC BY 4.0). true eng http://creativecommons.org/licenses/by/4.0/
title A re-assessment of Ti-685 as a dwell sensitive titanium alloy and a definition for engineering relevant dwell behaviour
spellingShingle A re-assessment of Ti-685 as a dwell sensitive titanium alloy and a definition for engineering relevant dwell behaviour
Martin Bache
Jing Li
Helen Davies
title_short A re-assessment of Ti-685 as a dwell sensitive titanium alloy and a definition for engineering relevant dwell behaviour
title_full A re-assessment of Ti-685 as a dwell sensitive titanium alloy and a definition for engineering relevant dwell behaviour
title_fullStr A re-assessment of Ti-685 as a dwell sensitive titanium alloy and a definition for engineering relevant dwell behaviour
title_full_unstemmed A re-assessment of Ti-685 as a dwell sensitive titanium alloy and a definition for engineering relevant dwell behaviour
title_sort A re-assessment of Ti-685 as a dwell sensitive titanium alloy and a definition for engineering relevant dwell behaviour
author_id_str_mv 3453423659f6bcfddcd0a716c6b0e36a
63decc944dd44c096082eea7cd16d3f3
a5277aa17f0f10a481da9e9751ccaeef
author_id_fullname_str_mv 3453423659f6bcfddcd0a716c6b0e36a_***_Martin Bache
63decc944dd44c096082eea7cd16d3f3_***_Jing Li
a5277aa17f0f10a481da9e9751ccaeef_***_Helen Davies
author Martin Bache
Jing Li
Helen Davies
author2 Martin Bache
Jing Li
Helen Davies
format Journal article
container_title International Journal of Fatigue
container_volume 178
container_start_page 108008
publishDate 2024
institution Swansea University
issn 0142-1123
1879-3452
doi_str_mv 10.1016/j.ijfatigue.2023.108008
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
url http://dx.doi.org/10.1016/j.ijfatigue.2023.108008
document_store_str 1
active_str 0
description It is believed that the near-α titanium alloy Ti-685 was the first to demonstrate dwell sensitive fatigue behaviour whilst under engineering service as a gas turbine fan disc material. New fatigue data, micro-textural characterisation and fractography from a recent study which utilised remnant Ti-685 specimens originally manufactured for previous laboratory campaigns based at Swansea dating back to the late 1980s are now reported. In isolation, the present results failed to demonstrate a significant dwell effect in either aligned or basketweave microstructural variants. On this occasion, the limited sensitivity to dwell loading was explained by the combination of heat treatment artifacts and selection of a relatively small test specimen geometry. However, the present data were also reviewed in the context of the wider fatigue database generated by multiple studies over the past fifty years. In combination, stress-life (SN) curves defined the magnitude in applied peak stress necessary to demonstrate a dwell effect in this alloy. Ultimately, this facilitated a fundamental definition of dwell sensitivity that is relevant to the engineering community.
published_date 2024-01-31T13:36:08Z
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score 11.013371

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