Stress relief during annealing of railway wheel steel characterized by synchrotron X-ray micro-diffraction
Paper i 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.
Författare
Yubin Zhang
Danmarks Tekniske Universitet (DTU)
Casey Jessop
Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial
Dimitrios Nikas
Karlstads universitet
Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial
Tianbo Yu
Danmarks Tekniske Universitet (DTU)
Wenjun Liu
Argonne National Laboratory
Johan Ahlström
Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial
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,
Styrkeområden
Transport
Materialvetenskap
Ämneskategorier
Bearbetnings-, yt- och fogningsteknik
Annan materialteknik
Metallurgi och metalliska material
DOI
10.1088/1757-899X/1249/1/012043