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A re-assessment of Ti-685 as a dwell sensitive titanium alloy and a definition for engineering relevant dwell behaviour
International Journal of Fatigue, Volume: 178, Start page: 108008
Swansea University Authors:
Martin Bache, Jing Li, Helen Davies
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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...
Published in: | International Journal of Fatigue |
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ISSN: | 0142-1123 1879-3452 |
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Elsevier BV
2024
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URI: | https://cronfa.swan.ac.uk/Record/cronfa64765 |
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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 |
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Swansea University |
issn |
0142-1123 1879-3452 |
doi_str_mv |
10.1016/j.ijfatigue.2023.108008 |
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Elsevier BV |
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Faculty of Science and Engineering |
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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 |
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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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1783090243141894144 |
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11.021648 |