The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy

Jones, Jonathan; Gonzalez-Garcia, Alberto; Whittaker, Mark; Lancaster, Robert; Barnard, Nick; John, Sean; Doyle, Joseph; Mason-Flucke, Julian

doi:10.1016/j.ijfatigue.2025.108887

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The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy

Jonathan Jones, Alberto Gonzalez-Garcia, Mark Whittaker

, Robert Lancaster

, Nick Barnard, Sean John, Joseph Doyle

, Julian Mason-Flucke

International Journal of Fatigue, Volume: 196, Start page: 108887

Swansea University Authors: Jonathan Jones, Alberto Gonzalez-Garcia, Mark Whittaker , Robert Lancaster , Nick Barnard, Sean John

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DOI (Published version): 10.1016/j.ijfatigue.2025.108887

Abstract

Thermo-mechanical fatigue (TMF) is a complex damage mechanism considered to be one of the key issues limiting the service lives of hot section components in a gas turbine engine. Turbine blades and nozzle guide vanes are particularly susceptible to this form of material degradation, which results fr...

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Published in:	International Journal of Fatigue
ISSN:	0142-1123
Published:	Elsevier BV 2025
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa68923

first_indexed	2025-02-19T11:42:46Z
last_indexed	2025-03-26T05:31:11Z
id	cronfa68923
recordtype	SURis
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Turbine blades and nozzle guide vanes are particularly susceptible to this form of material degradation, which results from the simultaneous cycling of mechanical and thermal loads. In this research, a series of TMF tests were undertaken on a single crystal nickel-based superalloy, CMSX-4 under a variety of phase angles and a thermal cycle of 550–1050 °C, to holistically understand the evolving damage mechanisms that can occur under the various loading conditions. The generated data has shown that for the strain ranges tested, fatigue life is significantly affected by the employed phase angle. Furthermore, the length of time that the material is exposed to elevated temperature has a substantial influence on the material’s microstructure, and thus, the dominant mode of damage that occurs.</abstract><type>Journal Article</type><journal>International Journal of Fatigue</journal><volume>196</volume><journalNumber/><paginationStart>108887</paginationStart><paginationEnd/><publisher>Elsevier BV</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>0142-1123</issnPrint><issnElectronic/><keywords/><publishedDay>1</publishedDay><publishedMonth>7</publishedMonth><publishedYear>2025</publishedYear><publishedDate>2025-07-01</publishedDate><doi>10.1016/j.ijfatigue.2025.108887</doi><url/><notes/><college>COLLEGE NANME</college><CollegeCode>COLLEGE CODE</CollegeCode><institution>Swansea University</institution><apcterm/><funders>This information/report/data was generated under ATI Programme 113180. The provision of materials and supporting information from Rolls-Royce plc. is gratefully acknowledged. 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spelling	2025-03-25T13:27:51.5395724 v2 68923 2025-02-19 The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy f8a9f680a0a4af8456672e5684e531c8 Jonathan Jones Jonathan Jones true false 1309a668e557bb7564fbd11a677ea46a Alberto Gonzalez-Garcia Alberto Gonzalez-Garcia true false a146c6d442cb2c466d096179f9ac97ca 0000-0002-5854-0726 Mark Whittaker Mark Whittaker true false e1a1b126acd3e4ff734691ec34967f29 0000-0002-1365-6944 Robert Lancaster Robert Lancaster true false dc4a58e614bc6a1d99812a3acfdd9034 Nick Barnard Nick Barnard true false 8332e0e483d7926c508d9309553e3497 Sean John Sean John true false 2025-02-19 Thermo-mechanical fatigue (TMF) is a complex damage mechanism considered to be one of the key issues limiting the service lives of hot section components in a gas turbine engine. Turbine blades and nozzle guide vanes are particularly susceptible to this form of material degradation, which results from the simultaneous cycling of mechanical and thermal loads. In this research, a series of TMF tests were undertaken on a single crystal nickel-based superalloy, CMSX-4 under a variety of phase angles and a thermal cycle of 550–1050 °C, to holistically understand the evolving damage mechanisms that can occur under the various loading conditions. The generated data has shown that for the strain ranges tested, fatigue life is significantly affected by the employed phase angle. Furthermore, the length of time that the material is exposed to elevated temperature has a substantial influence on the material’s microstructure, and thus, the dominant mode of damage that occurs. Journal Article International Journal of Fatigue 196 108887 Elsevier BV 0142-1123 1 7 2025 2025-07-01 10.1016/j.ijfatigue.2025.108887 COLLEGE NANME COLLEGE CODE Swansea University This information/report/data was generated under ATI Programme 113180. The provision of materials and supporting information from Rolls-Royce plc. is gratefully acknowledged. The current research was partly funded by the Materials and Manufacturing Academy, M2A, supported by the European Social fund through the Welsh Government. 2025-03-25T13:27:51.5395724 2025-02-19T11:36:29.3741525 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Jonathan Jones 1 Alberto Gonzalez-Garcia 2 Mark Whittaker 0000-0002-5854-0726 3 Robert Lancaster 0000-0002-1365-6944 4 Nick Barnard 5 Sean John 6 Joseph Doyle 0009-0005-5685-6435 7 Julian Mason-Flucke 8 68923__33640__3e43c5a745c340d3a564c52baf103a42.pdf 68923.pdf 2025-02-19T11:42:18.7569904 Output 2100563 application/pdf Accepted Manuscript true Author accepted manuscript document released under the terms of a Creative Commons CC-BY licence using the Swansea University Research Publications Policy (rights retention). true eng https://creativecommons.org/licenses/by/4.0/deed.en
title	The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy
spellingShingle	The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy Jonathan Jones Alberto Gonzalez-Garcia Mark Whittaker Robert Lancaster Nick Barnard Sean John
title_short	The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy
title_full	The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy
title_fullStr	The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy
title_full_unstemmed	The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy
title_sort	The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy
author_id_str_mv	f8a9f680a0a4af8456672e5684e531c8 1309a668e557bb7564fbd11a677ea46a a146c6d442cb2c466d096179f9ac97ca e1a1b126acd3e4ff734691ec34967f29 dc4a58e614bc6a1d99812a3acfdd9034 8332e0e483d7926c508d9309553e3497
author_id_fullname_str_mv	f8a9f680a0a4af8456672e5684e531c8_*_Jonathan Jones 1309a668e557bb7564fbd11a677ea46a__Alberto Gonzalez-Garcia a146c6d442cb2c466d096179f9ac97ca__Mark Whittaker e1a1b126acd3e4ff734691ec34967f29__Robert Lancaster dc4a58e614bc6a1d99812a3acfdd9034__Nick Barnard 8332e0e483d7926c508d9309553e3497_*_Sean John
author	Jonathan Jones Alberto Gonzalez-Garcia Mark Whittaker Robert Lancaster Nick Barnard Sean John
author2	Jonathan Jones Alberto Gonzalez-Garcia Mark Whittaker Robert Lancaster Nick Barnard Sean John Joseph Doyle Julian Mason-Flucke
format	Journal article
container_title	International Journal of Fatigue
container_volume	196
container_start_page	108887
publishDate	2025
institution	Swansea University
issn	0142-1123
doi_str_mv	10.1016/j.ijfatigue.2025.108887
publisher	Elsevier BV
college_str	Faculty of Science and Engineering
hierarchytype
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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
document_store_str	1
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description	Thermo-mechanical fatigue (TMF) is a complex damage mechanism considered to be one of the key issues limiting the service lives of hot section components in a gas turbine engine. Turbine blades and nozzle guide vanes are particularly susceptible to this form of material degradation, which results from the simultaneous cycling of mechanical and thermal loads. In this research, a series of TMF tests were undertaken on a single crystal nickel-based superalloy, CMSX-4 under a variety of phase angles and a thermal cycle of 550–1050 °C, to holistically understand the evolving damage mechanisms that can occur under the various loading conditions. The generated data has shown that for the strain ranges tested, fatigue life is significantly affected by the employed phase angle. Furthermore, the length of time that the material is exposed to elevated temperature has a substantial influence on the material’s microstructure, and thus, the dominant mode of damage that occurs.
published_date	2025-07-01T08:20:59Z
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score	11.057624

The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy

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