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Solute redistribution in the nanocrystalline structure formed in bearing steels

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<mark>Journal publication date</mark>10/2013
<mark>Journal</mark>Scripta Materialia
Issue number8
Number of pages4
Pages (from-to)630-633
Publication StatusPublished
<mark>Original language</mark>English


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.