Journal article 53 views
The influence of phase angle on the TMF crack initiation behaviour and damage mechanisms of a single-crystal superalloy
,
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...
| Published in: | International Journal of Fatigue |
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| ISSN: | 0142-1123 |
| Published: |
Elsevier BV
2025
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa68923 |
| 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 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. |
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| College: |
Faculty of Science and Engineering |
| 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.
The current research was partly funded by the Materials and Manufacturing Academy, M2A, supported by the European Social fund through the Welsh Government. |
| Start Page: |
108887 |