Temperature-dependent evolution of the cyclic yield stress of railway wheel steels
Artikel i vetenskaplig tidskrift, 2016

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 to 600 °C. Different constant 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.

Thermal effects

Low cycle fatigue

Rolling contact fatigue

Stress–strain loop

Ratcheting

Författare

Johan Ahlström

Chalmers, Material- och tillverkningsteknik, Materialteknologi

Elena Kabo

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

Anders Ekberg

Dynamik

Wear

0043-1648 (ISSN)

Vol. 366 SI 378-382

Styrkeområden

Transport

Materialvetenskap

Fundament

Grundläggande vetenskaper

Ämneskategorier

Annan materialteknik

Farkostteknik

DOI

10.1016/j.wear.2016.04.002