Temperature-dependent evolution of the cyclic yield stress of railway wheel steels
Paper in proceeding, 2015

The evolution of the cyclic yield stress for a railway wheel steel (UIC ER7T) during cyclic plastic straining has been characterized at different temperatures from -60 – 600°C. Two strain amplitude levels were examined and for temperatures above 200°C, hold periods were included to study stress relaxation during constant compressive strain. The results are of use in predicting material deformation and damage. This is demonstrated by the application to improve a criterion for surface initiated rolling contact fatigue damage.


Johan Ahlström

Chalmers, Materials and Manufacturing Technology, Materials Technology

Elena Kabo

Chalmers, Applied Mechanics, Material and Computational Mechanics

Anders Ekberg


Proceedings of the 10th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems (CM2015)

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