Stress relief during annealing of railway wheel steel characterized by synchrotron X-ray micro-diffraction
Paper in proceeding, 2022

Railway wheels in service experience rolling contact fatigue loading, but also need to resist frictional heating on braking, yielding temperatures up to 500 degrees C. The combination of mechanical and thermal loads leads to changes in the mechanical properties of the material. The focus of this study is to investigate the effect of annealing on local microstructure and residual stresses in railway wheel pearlitic steel (medium carbon steels, similar to 0.55 wt.% C) using synchroton X-ray Laue micro-diffraction. It is found that the local residual stress releases to a large extent after annealing at 500 degrees C. The stress formation and relief mechanisms and their relationship to the local microstructure are discussed.

Author

Yubin Zhang

Technical University of Denmark (DTU)

Casey Jessop

Chalmers, Industrial and Materials Science, Engineering Materials

Dimitrios Nikas

Karlstad University

Chalmers, Industrial and Materials Science, Engineering Materials

Tianbo Yu

Technical University of Denmark (DTU)

Wenjun Liu

Argonne National Laboratory

Johan Ahlström

Chalmers, Industrial and Materials Science, Engineering Materials

42ND RISO INTERNATIONAL SYMPOSIUM ON MATERIALS SCIENCE: MICROSTRUCTURAL VARIABILITY: PROCESSING, ANALYSIS, MECHANISMS AND PROPERTIES

1757-8981 (ISSN)

Vol. 1249 012043

42nd Riso International Symposium on Materials Science - Microstructural Variability - Processing, Analysis, Mechanisms and Properties
Roskilde, Denmark,

Areas of Advance

Transport

Materials Science

Subject Categories

Manufacturing, Surface and Joining Technology

Other Materials Engineering

Metallurgy and Metallic Materials

DOI

10.1088/1757-899X/1249/1/012043

More information

Latest update

10/26/2023