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
Chalmers, Industrial and Materials Science, Engineering Materials
Karlstad University
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,
Roskilde, Denmark,
Modelling of properties and damage in wheel and rail materials (CHARMEC MU30)
Chalmers Railway Mechanics (CHARMEC), 2013-04-01 -- 2021-06-30.
Areas of Advance
Transport
Materials Science
Subject Categories (SSIF 2011)
Manufacturing, Surface and Joining Technology
Other Materials Engineering
Metallurgy and Metallic Materials
DOI
10.1088/1757-899X/1249/1/012043