LAUSR

Abstract In hot milling process, rolling die is subjected to nonsteady conditions which can raise the combinations of fatigue and creep damage mechanism. Creep-fatigue interaction at elevated temperatures is complex research topic; as a result, prediction of failure due to creep-fatigue interaction is important subjects to assess rolling die life. Because the accuracy and consistency of models developed in this area show a large variation due to the considered parameters, conditions and assumptions, the capability of the developed models need to be verified for a particular set of circumstances. As part of evaluation, H13 tool steel material behavior was considered and creep-fatigue interaction models were performed. In this paper, the model consists of three parts: mechanism of creep-fatigue interaction, elliptical crack growth rate and H13 tool material response to the loads at high temperature. The model includes new proposed constitutive equations for crack growth and properties of H13 material response, etc. To verify the models, finite element simulation and experimental data are considered. The analytical models are computed using Python, and the ABAQUS software has been used for the finite element simulations. The results show a good agreement with the finite element simulation and experimental data.