SYMPOSIA PAPER Published: 01 January 2003

Modelling of Hysteresis Loops During Thermomechanical Fatigue


The hysteresis loops obtained during thermomechanical fatigue testing of the stainless steel 253 MA and the ODS alloy PM2000 have been analysed using a model taking elastic, plastic, and creep deformation into account. Data from previously performed creep and tensile tests were used to determine the constants in the model. Hysteresis loops both from in-phase and out-of-phase cycling were successfully reproduced. By integrating the fatigue and creep damage along the hysteresis loops, the cyclic lifetimes of 253 MA were predicted.

Author Information

Sandström, R
Swedish Institute for Metals Research, Stockholm, Sweden Materials Technology, Royal Institute of Technology, Stockholm, Sweden
Andersson, HCM
Swedish Institute for Metals Research, Stockholm, Sweden
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Developed by Committee: E08
Pages: 31–44
DOI: 10.1520/STP11425S
ISBN-EB: 978-0-8031-5478-0
ISBN-13: 978-0-8031-3467-6