@inproceedings{c7c0e5cf244d411d860ec68b3f8b5a3c,
title = "Cyclic visco-plasticity testing and modelling of a service-aged P91 steel",
abstract = "A service-aged P91 steel was used to perform an experimental programme of cyclic mechanical testing in the temperature range of 400°C to 600°C, under isothermal conditions, using both saw-tooth and dwell (inclusion of a constant strain dwell period at the maximum (tensile) strain within the cycle) waveforms. The results of this testing were used to identify the material constants for a modified Chaboche, unified visco-plasticity model, which can deal with rate-dependant cyclic effects, such as combined isotropic and kinematic hardening, and time-dependent effects, such as creep, associated with visco-plasticity. The model has been modified in order that the two-stage (non-linear primary and linear secondary) softening which occurs within the cyclic response of the service-aged P91 material is accounted for and accurately predicted. The characterisation of the cyclic visco-plasticity behaviour of the service-aged P91 material at 500°C is presented and compared to experimental stress-strain loops, cyclic softening and creep relaxation, obtained from the cyclic isothermal tests.",
author = "Hyde, {C. J.} and W. Sun and Hyde, {T. H.} and Rouse, {J. P.} and T. Farragher and O'Dowd, {Noel P.} and Leen, {S. B.}",
year = "2012",
doi = "10.1115/PVP2012-78460",
language = "English",
isbn = "9780791855058",
series = "American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP",
publisher = "American Society of Mechanical Engineers (ASME)",
number = "PARTS A AND B",
pages = "343--348",
booktitle = "ASME 2012 Pressure Vessels and Piping Conference, PVP 2012",
edition = "PARTS A AND B",
note = "ASME 2012 Pressure Vessels and Piping Conference, PVP 2012 ; Conference date: 15-07-2012 Through 19-07-2012",
}