Abstract
In high-temperature and low-cycle fatigue, creep damage reduces fatigue life. In this investigation, a model for life prediction in low-cycle fatigue with hold time at tensile peak strain is suggested in the temperature region of 0.57Tm. This model is based on previously reported theories for creep cavitatation and we predict the creep-fatigue life. It is proposed that the fatigue life may be predicted in terms of plastic strain range, test temperature, hold time and other parameters. An equation for life prediction is given and checked using other investigators' experimental results with various hold times. The predicted creep-fatigue lives are in good agreement with those observed experimentally for 304 stainless steel, 316 stainless steel, CrMoV steel and 13CrMo44 steel.
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