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Thermal-mechanical fatigue simulation of a P91 steel in a temperature range of 400–600°C

Saad, A.A.; Hyde, Christopher J.; Sun, Wei; Hyde, T.H.

Authors

A.A. Saad

Christopher J. Hyde

Wei Sun

T.H. Hyde



Abstract

This paper deals with the identification of material constants to simulate the effect of cyclic mechanical loading and temperatures. A Chaboche viscoplasticity model was used in this study to model the thermal-mechanical behaviour of a P91 martensitic steel. A fully-reversed cyclic mechanical testing programme was conducted isothermally between 400 and 600°C with a strain amplitude of 0.5%, to identify the model constants using a thermo-mechanical fatigue (TMF) test machine. Thermo-mechanical tests of P91 steel were conducted for two temperature ranges of 400 – 500°C and 400 – 600°C. From the test results, it can be seen that the P91 steel exhibits cyclic softening throughout the life of the specimens, for both isothermal and thermal-mechanical loading and this effect can be modelled by the set of viscoplasticity constants obtained. Finite element simulations of the test specimens show good comparison to isothermal and TMF experimental data.

Journal Article Type Article
Publication Date Jan 1, 2011
Journal Materials at High Temperatures
Print ISSN 0960-3409
Electronic ISSN 1878-6413
Publisher Taylor & Francis
Peer Reviewed Peer Reviewed
Volume 28
Issue 3
APA6 Citation Saad, A., Hyde, C. J., Sun, W., & Hyde, T. (2011). Thermal-mechanical fatigue simulation of a P91 steel in a temperature range of 400–600°C. Materials at High Temperatures, 28(3), doi:10.3184/096034011X13072954674044
DOI https://doi.org/10.3184/096034011X13072954674044
Keywords thermo-mechanical fatigue, viscoplasticity model, P91 steel, FE prediction
Publisher URL http://www.tandfonline.com/doi/abs/10.3184/096034011X13072954674044?journalCode=ymht20
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information This is an Accepted Manuscript of an article published by Taylor & Francis in Materials at High Temperatures on 2011, available online: http://www.tandfonline....6034011X13072954674044.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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