Modelling of cyclic plasticity and phase transformations during repeated local heating events in rail and wheel steels
Journal article, 2021

Short term local friction heating events in railway operations might lead to phase transformations in pearlitic rail and wheel steels. A modelling framework for phase transformations combined with cyclic plasticity for the individual phases is presented. The phase transformation kinetics include e.g. austenitization due to heating, martensite formation due to rapid cooling and martensite tempering. The modelling framework has been calibrated against cyclic dilatometry test data and cyclic mechanical experiments. Simulations of a double heating event followed by rolling contact loadings show phase transformations and how cyclic residual stresses develop in the different phases.

Thermal damage

Cyclic plasticity

White etching layer

Residual stress

Phase transformation

Pearlitic steel

Martensite

Author

Ali Esmaeili

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Johan Ahlström

Chalmers, Industrial and Materials Science, Engineering Materials

Björn Andersson

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Magnus Ekh

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

International Journal of Fatigue

0142-1123 (ISSN)

Vol. 151 106361

Subject Categories

Energy Engineering

Other Materials Engineering

Metallurgy and Metallic Materials

DOI

10.1016/j.ijfatigue.2021.106361

More information

Latest update

7/15/2021