Solute redistribution in the nanocrystalline structure formed in bearing steels

The microstructural alteration in a white etching area (WEA) formed during rolling contact fatigue of a 1C-1.8Cr steel (wt.%) is studied. A uniform nanocrystalline structure with scattered carbide particles is observed. Si and C atoms segregate to different regions in the cell boundaries, implying a...

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Bibliographic Details
Main Authors: Kang, J, Hosseinkhani, B, Williams, C, Moody, M, Bagot, P, Rivera-Díaz-Del-Castillo, P
Format: Journal article
Language:English
Published: 2013
Description
Summary:The microstructural alteration in a white etching area (WEA) formed during rolling contact fatigue of a 1C-1.8Cr steel (wt.%) is studied. A uniform nanocrystalline structure with scattered carbide particles is observed. Si and C atoms segregate to different regions in the cell boundaries, implying a repelling behaviour. Carbon-rich clusters were identified but contained less than 25 at.%C. It is suggested that the interaction between Si and C should be considered in the mechanism for microstructural decay. © 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.