Temperature-dependent evolution of the cyclic yield stress of railway wheel steels
Paper i 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.

Författare

Johan Ahlström

Chalmers, Material- och tillverkningsteknik, Materialteknologi

Elena Kabo

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

Anders Ekberg

Chalmers, Tillämpad mekanik, Dynamik

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

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Styrkeområden

Transport

Ämneskategorier

Teknisk mekanik

Annan materialteknik