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The effect of near-surface plastic deformation on the hot corrosion and high temperature corrosion-fatigue response of a nickel-based superalloy
Journal of Alloys and Compounds, Volume: 832
Swansea University Authors: Hollie Cockings , Ben Cockings, Will Harrison , Mike Dowd, Karen Perkins , Mark Whittaker
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DOI (Published version): 10.1016/j.jallcom.2020.154889
Abstract
Surface treatments such as shot peening to inhibit fatigue crack initiation are essential processes when designing gas turbine components for aerospace applications. It is therefore crucial to understand the effects of shot peening in representative service environments. Here, the influence of surfa...
Published in: | Journal of Alloys and Compounds |
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ISSN: | 0925-8388 |
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2020
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URI: | https://cronfa.swan.ac.uk/Record/cronfa53920 |
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It is therefore crucial to understand the effects of shot peening in representative service environments. Here, the influence of surface treatment on the high temperature corrosion fatigue response of a polycrystalline nickel-based superalloy is considered, an area that has not previously been explored. Two shot peening conditions; 110H 7A 200% and 330H 7A 200%, along with a polished surface were chosen. Specimens were salted and exposed to SO2 gas during fatigue testing at 700 °C. A range of novel techniques including SEM, EBSD and axial chromatism profilometry were used to analyse the near surface cold work and surface condition before and after testing. EBSD local misorientation maps, paired with an increase in corrosion-fatigue life, suggest that a greater depth of cold work produced by the smaller shot size (110H), is providing a significant benefit in terms of hot corrosion and corrosion-fatigue performance. This paper concludes that the presence of a substantial layer of cold work is required to account for any metal loss due to the effects of hot corrosion. It is also evident that cold work hinders fatigue crack initiation and delays the onset of pit to crack transition.</abstract><type>Journal Article</type><journal>Journal of Alloys and Compounds</journal><volume>832</volume><journalNumber/><paginationStart/><paginationEnd/><publisher/><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>0925-8388</issnPrint><issnElectronic/><keywords>High-temperature alloys, Surfaces and interfaces, Corrosion, Oxidation, Microstructure, Mechanical properties</keywords><publishedDay>15</publishedDay><publishedMonth>8</publishedMonth><publishedYear>2020</publishedYear><publishedDate>2020-08-15</publishedDate><doi>10.1016/j.jallcom.2020.154889</doi><url>https://www.sciencedirect.com/science/article/abs/pii/S0925838820312524?via%3Dihub</url><notes/><college>COLLEGE NANME</college><department>Materials Science and Engineering</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>MTLS</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2021-01-15T10:36:24.5176412</lastEdited><Created>2020-04-09T08:41:13.2264539</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Uncategorised</level></path><authors><author><firstname>Hollie</firstname><surname>Cockings</surname><orcid>0000-0002-9745-4521</orcid><order>1</order></author><author><firstname>Ben</firstname><surname>Cockings</surname><orcid/><order>2</order></author><author><firstname>Will</firstname><surname>Harrison</surname><orcid>0000-0002-0380-7075</orcid><order>3</order></author><author><firstname>Mike</firstname><surname>Dowd</surname><orcid/><order>4</order></author><author><firstname>Karen</firstname><surname>Perkins</surname><orcid>0000-0001-5826-9705</orcid><order>5</order></author><author><firstname>Mark</firstname><surname>Whittaker</surname><orcid>0000-0002-5854-0726</orcid><order>6</order></author><author><firstname>G.J.</firstname><surname>Gibson</surname><order>7</order></author></authors><documents><document><filename>53920__17032__fafa0db1c4b04cff91d8d6e82ca5d751.pdf</filename><originalFilename>53920.pdf</originalFilename><uploaded>2020-04-09T08:44:19.7154760</uploaded><type>Output</type><contentLength>5755639</contentLength><contentType>application/pdf</contentType><version>Accepted Manuscript</version><cronfaStatus>true</cronfaStatus><embargoDate>2021-04-06T00:00:00.0000000</embargoDate><documentNotes>© 2020. 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2021-01-15T10:36:24.5176412 v2 53920 2020-04-09 The effect of near-surface plastic deformation on the hot corrosion and high temperature corrosion-fatigue response of a nickel-based superalloy c951e311ac85396c2bb8ed4153b19fde 0000-0002-9745-4521 Hollie Cockings Hollie Cockings true false 998ffd9fa65fa0c2ffc718a5bff10cdd Ben Cockings Ben Cockings true false dae59f76fa4f63123aa028abfcd2b07a 0000-0002-0380-7075 Will Harrison Will Harrison true false 5ed34863b06d600da4be113c1c83a35c Mike Dowd Mike Dowd true false f866eaa2d8f163d2b4e99259966427c8 0000-0001-5826-9705 Karen Perkins Karen Perkins true false a146c6d442cb2c466d096179f9ac97ca 0000-0002-5854-0726 Mark Whittaker Mark Whittaker true false 2020-04-09 MTLS Surface treatments such as shot peening to inhibit fatigue crack initiation are essential processes when designing gas turbine components for aerospace applications. It is therefore crucial to understand the effects of shot peening in representative service environments. Here, the influence of surface treatment on the high temperature corrosion fatigue response of a polycrystalline nickel-based superalloy is considered, an area that has not previously been explored. Two shot peening conditions; 110H 7A 200% and 330H 7A 200%, along with a polished surface were chosen. Specimens were salted and exposed to SO2 gas during fatigue testing at 700 °C. A range of novel techniques including SEM, EBSD and axial chromatism profilometry were used to analyse the near surface cold work and surface condition before and after testing. EBSD local misorientation maps, paired with an increase in corrosion-fatigue life, suggest that a greater depth of cold work produced by the smaller shot size (110H), is providing a significant benefit in terms of hot corrosion and corrosion-fatigue performance. This paper concludes that the presence of a substantial layer of cold work is required to account for any metal loss due to the effects of hot corrosion. It is also evident that cold work hinders fatigue crack initiation and delays the onset of pit to crack transition. Journal Article Journal of Alloys and Compounds 832 0925-8388 High-temperature alloys, Surfaces and interfaces, Corrosion, Oxidation, Microstructure, Mechanical properties 15 8 2020 2020-08-15 10.1016/j.jallcom.2020.154889 https://www.sciencedirect.com/science/article/abs/pii/S0925838820312524?via%3Dihub COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2021-01-15T10:36:24.5176412 2020-04-09T08:41:13.2264539 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Hollie Cockings 0000-0002-9745-4521 1 Ben Cockings 2 Will Harrison 0000-0002-0380-7075 3 Mike Dowd 4 Karen Perkins 0000-0001-5826-9705 5 Mark Whittaker 0000-0002-5854-0726 6 G.J. Gibson 7 53920__17032__fafa0db1c4b04cff91d8d6e82ca5d751.pdf 53920.pdf 2020-04-09T08:44:19.7154760 Output 5755639 application/pdf Accepted Manuscript true 2021-04-06T00:00:00.0000000 © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. false eng http://creativecommons.org/licenses/by-nc-nd/4.0/ |
title |
The effect of near-surface plastic deformation on the hot corrosion and high temperature corrosion-fatigue response of a nickel-based superalloy |
spellingShingle |
The effect of near-surface plastic deformation on the hot corrosion and high temperature corrosion-fatigue response of a nickel-based superalloy Hollie Cockings Ben Cockings Will Harrison Mike Dowd Karen Perkins Mark Whittaker |
title_short |
The effect of near-surface plastic deformation on the hot corrosion and high temperature corrosion-fatigue response of a nickel-based superalloy |
title_full |
The effect of near-surface plastic deformation on the hot corrosion and high temperature corrosion-fatigue response of a nickel-based superalloy |
title_fullStr |
The effect of near-surface plastic deformation on the hot corrosion and high temperature corrosion-fatigue response of a nickel-based superalloy |
title_full_unstemmed |
The effect of near-surface plastic deformation on the hot corrosion and high temperature corrosion-fatigue response of a nickel-based superalloy |
title_sort |
The effect of near-surface plastic deformation on the hot corrosion and high temperature corrosion-fatigue response of a nickel-based superalloy |
author_id_str_mv |
c951e311ac85396c2bb8ed4153b19fde 998ffd9fa65fa0c2ffc718a5bff10cdd dae59f76fa4f63123aa028abfcd2b07a 5ed34863b06d600da4be113c1c83a35c f866eaa2d8f163d2b4e99259966427c8 a146c6d442cb2c466d096179f9ac97ca |
author_id_fullname_str_mv |
c951e311ac85396c2bb8ed4153b19fde_***_Hollie Cockings 998ffd9fa65fa0c2ffc718a5bff10cdd_***_Ben Cockings dae59f76fa4f63123aa028abfcd2b07a_***_Will Harrison 5ed34863b06d600da4be113c1c83a35c_***_Mike Dowd f866eaa2d8f163d2b4e99259966427c8_***_Karen Perkins a146c6d442cb2c466d096179f9ac97ca_***_Mark Whittaker |
author |
Hollie Cockings Ben Cockings Will Harrison Mike Dowd Karen Perkins Mark Whittaker |
author2 |
Hollie Cockings Ben Cockings Will Harrison Mike Dowd Karen Perkins Mark Whittaker G.J. Gibson |
format |
Journal article |
container_title |
Journal of Alloys and Compounds |
container_volume |
832 |
publishDate |
2020 |
institution |
Swansea University |
issn |
0925-8388 |
doi_str_mv |
10.1016/j.jallcom.2020.154889 |
college_str |
Faculty of Science and Engineering |
hierarchytype |
|
hierarchy_top_id |
facultyofscienceandengineering |
hierarchy_top_title |
Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
department_str |
School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised |
url |
https://www.sciencedirect.com/science/article/abs/pii/S0925838820312524?via%3Dihub |
document_store_str |
1 |
active_str |
0 |
description |
Surface treatments such as shot peening to inhibit fatigue crack initiation are essential processes when designing gas turbine components for aerospace applications. It is therefore crucial to understand the effects of shot peening in representative service environments. Here, the influence of surface treatment on the high temperature corrosion fatigue response of a polycrystalline nickel-based superalloy is considered, an area that has not previously been explored. Two shot peening conditions; 110H 7A 200% and 330H 7A 200%, along with a polished surface were chosen. Specimens were salted and exposed to SO2 gas during fatigue testing at 700 °C. A range of novel techniques including SEM, EBSD and axial chromatism profilometry were used to analyse the near surface cold work and surface condition before and after testing. EBSD local misorientation maps, paired with an increase in corrosion-fatigue life, suggest that a greater depth of cold work produced by the smaller shot size (110H), is providing a significant benefit in terms of hot corrosion and corrosion-fatigue performance. This paper concludes that the presence of a substantial layer of cold work is required to account for any metal loss due to the effects of hot corrosion. It is also evident that cold work hinders fatigue crack initiation and delays the onset of pit to crack transition. |
published_date |
2020-08-15T04:07:09Z |
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1763753516881412096 |
score |
11.036837 |