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Influence of shot peening on high-temperature corrosion and corrosion-fatigue of nickel based superalloy 720Li

G. J. Gibson, K. M. Perkins, S. Gray, A. J. Leggett, Karen Perkins Orcid Logo

Materials at High Temperatures, Volume: 33, Issue: 3, Pages: 225 - 233

Swansea University Author: Karen Perkins Orcid Logo

Abstract

High-temperature corrosion fatigue, a combination of corrosion with a fatigue cycle, is an emerging generic issue affecting power generation and aero gas turbine engines and has the potential to limit component life. Historically, surface treatments, such as shot peening have been used to improve co...

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Published in: Materials at High Temperatures
ISSN: 0960-3409 1878-6413
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa28321
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spelling 2017-07-11T14:21:50.7798313 v2 28321 2016-05-26 Influence of shot peening on high-temperature corrosion and corrosion-fatigue of nickel based superalloy 720Li f866eaa2d8f163d2b4e99259966427c8 0000-0001-5826-9705 Karen Perkins Karen Perkins true false 2016-05-26 EEN High-temperature corrosion fatigue, a combination of corrosion with a fatigue cycle, is an emerging generic issue affecting power generation and aero gas turbine engines and has the potential to limit component life. Historically, surface treatments, such as shot peening have been used to improve component life and have been optimised for fatigue response. Research into optimisation of shot peening techniques for hot corrosion and high-temperature corrosion fatigue has shown 6–8A 230H 200% coverage to provide overall optimum performance for nickel-based superalloy 720Li based on the limited data within this study. Utilisation of electron backscatter diffraction techniques, in combination with detailed assessment of corrosion products have been undertaken as part of this work. The resultant cold-work visualisation technique provides a novel method of determining the variation in material properties due to the shot peening process and the interaction with hot corrosion. Through this work it has been shown that all three shot peening outputs must be considered to minimise the effect of corrosion fatigue, the cold work, residual stress and surface roughness. Further opportunity for optimisation has also been identified based on this work. Journal Article Materials at High Temperatures 33 3 225 233 0960-3409 1878-6413 31 12 2016 2016-12-31 10.1080/09603409.2016.1161945 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University RCUK, EP/M005607/1 2017-07-11T14:21:50.7798313 2016-05-26T09:06:07.3851953 College of Engineering Engineering G. J. Gibson 1 K. M. Perkins 2 S. Gray 3 A. J. Leggett 4 Karen Perkins 0000-0001-5826-9705 5 0028321-13072016144253.pdf gibson2016.pdf 2016-07-13T14:42:53.8630000 Output 1905631 application/pdf Corrected Version of Record true 2016-07-13T00:00:00.0000000 false
title Influence of shot peening on high-temperature corrosion and corrosion-fatigue of nickel based superalloy 720Li
spellingShingle Influence of shot peening on high-temperature corrosion and corrosion-fatigue of nickel based superalloy 720Li
Karen Perkins
title_short Influence of shot peening on high-temperature corrosion and corrosion-fatigue of nickel based superalloy 720Li
title_full Influence of shot peening on high-temperature corrosion and corrosion-fatigue of nickel based superalloy 720Li
title_fullStr Influence of shot peening on high-temperature corrosion and corrosion-fatigue of nickel based superalloy 720Li
title_full_unstemmed Influence of shot peening on high-temperature corrosion and corrosion-fatigue of nickel based superalloy 720Li
title_sort Influence of shot peening on high-temperature corrosion and corrosion-fatigue of nickel based superalloy 720Li
author_id_str_mv f866eaa2d8f163d2b4e99259966427c8
author_id_fullname_str_mv f866eaa2d8f163d2b4e99259966427c8_***_Karen Perkins
author Karen Perkins
author2 G. J. Gibson
K. M. Perkins
S. Gray
A. J. Leggett
Karen Perkins
format Journal article
container_title Materials at High Temperatures
container_volume 33
container_issue 3
container_start_page 225
publishDate 2016
institution Swansea University
issn 0960-3409
1878-6413
doi_str_mv 10.1080/09603409.2016.1161945
college_str College of Engineering
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hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
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description High-temperature corrosion fatigue, a combination of corrosion with a fatigue cycle, is an emerging generic issue affecting power generation and aero gas turbine engines and has the potential to limit component life. Historically, surface treatments, such as shot peening have been used to improve component life and have been optimised for fatigue response. Research into optimisation of shot peening techniques for hot corrosion and high-temperature corrosion fatigue has shown 6–8A 230H 200% coverage to provide overall optimum performance for nickel-based superalloy 720Li based on the limited data within this study. Utilisation of electron backscatter diffraction techniques, in combination with detailed assessment of corrosion products have been undertaken as part of this work. The resultant cold-work visualisation technique provides a novel method of determining the variation in material properties due to the shot peening process and the interaction with hot corrosion. Through this work it has been shown that all three shot peening outputs must be considered to minimise the effect of corrosion fatigue, the cold work, residual stress and surface roughness. Further opportunity for optimisation has also been identified based on this work.
published_date 2016-12-31T03:49:46Z
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