Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels
In this paper, the cyclic plasticity and fatigue crack initiation behaviour of a tempered martensite ferritic steel under thermo-mechanical fatigue conditions is examined by means of micromechanical finite element modelling. The crystal plasticity-based model explicitly reflects the microstructure o...
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| Format: | Article |
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2016
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| Online Access: | https://eprints.nottingham.ac.uk/35542/ |
| _version_ | 1848795102712954880 |
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| author | Li, Dong-Feng Barrett, Richard A. O’Donoghue, Padraic E. Hyde, Christopher J. O’Dowd, Noel P. Leen, Sean B. |
| author_facet | Li, Dong-Feng Barrett, Richard A. O’Donoghue, Padraic E. Hyde, Christopher J. O’Dowd, Noel P. Leen, Sean B. |
| author_sort | Li, Dong-Feng |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In this paper, the cyclic plasticity and fatigue crack initiation behaviour of a tempered martensite ferritic steel under thermo-mechanical fatigue conditions is examined by means of micromechanical finite element modelling. The crystal plasticity-based model explicitly reflects the microstructure of the material, measured by electronic backscatter diffraction. The predicted cyclic thermo-mechanical response agrees well with experiments under both in-phase and out-of-phase conditions. A thermo-mechanical fatigue indicator parameter, with stress triaxiality and temperature taken into account, is developed to predict fatigue crack initiation. In the fatigue crack initiation simulation, the out-of-phase thermo-mechanical response is identified to be more dangerous than in-phase response, which is consistent with experimental failure data. It is shown that the behaviour of thermo-mechanical fatigue can be effectively predicted at the microstructural level and this can lead to a more accurate assessment procedure for power plant components. |
| first_indexed | 2025-11-14T19:26:45Z |
| format | Article |
| id | nottingham-35542 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:26:45Z |
| publishDate | 2016 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-355422020-05-04T17:57:45Z https://eprints.nottingham.ac.uk/35542/ Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels Li, Dong-Feng Barrett, Richard A. O’Donoghue, Padraic E. Hyde, Christopher J. O’Dowd, Noel P. Leen, Sean B. In this paper, the cyclic plasticity and fatigue crack initiation behaviour of a tempered martensite ferritic steel under thermo-mechanical fatigue conditions is examined by means of micromechanical finite element modelling. The crystal plasticity-based model explicitly reflects the microstructure of the material, measured by electronic backscatter diffraction. The predicted cyclic thermo-mechanical response agrees well with experiments under both in-phase and out-of-phase conditions. A thermo-mechanical fatigue indicator parameter, with stress triaxiality and temperature taken into account, is developed to predict fatigue crack initiation. In the fatigue crack initiation simulation, the out-of-phase thermo-mechanical response is identified to be more dangerous than in-phase response, which is consistent with experimental failure data. It is shown that the behaviour of thermo-mechanical fatigue can be effectively predicted at the microstructural level and this can lead to a more accurate assessment procedure for power plant components. 2016-06-04 Article PeerReviewed Li, Dong-Feng, Barrett, Richard A., O’Donoghue, Padraic E., Hyde, Christopher J., O’Dowd, Noel P. and Leen, Sean B. (2016) Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels. International Journal of Fatigue, 87 . pp. 192-202. ISSN 0142-1123 Tempered martensite ferritic steels; Thermo-mechanical fatigue; Crystal plasticity; Fatigue crack initiation; Finite element http://www.sciencedirect.com/science/article/pii/S0142112315004247 doi:10.1016/j.ijfatigue.2015.11.025 doi:10.1016/j.ijfatigue.2015.11.025 |
| spellingShingle | Tempered martensite ferritic steels; Thermo-mechanical fatigue; Crystal plasticity; Fatigue crack initiation; Finite element Li, Dong-Feng Barrett, Richard A. O’Donoghue, Padraic E. Hyde, Christopher J. O’Dowd, Noel P. Leen, Sean B. Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels |
| title | Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels |
| title_full | Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels |
| title_fullStr | Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels |
| title_full_unstemmed | Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels |
| title_short | Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels |
| title_sort | micromechanical finite element modelling of thermo-mechanical fatigue for p91 steels |
| topic | Tempered martensite ferritic steels; Thermo-mechanical fatigue; Crystal plasticity; Fatigue crack initiation; Finite element |
| url | https://eprints.nottingham.ac.uk/35542/ https://eprints.nottingham.ac.uk/35542/ https://eprints.nottingham.ac.uk/35542/ |