Hydrogen-accelerated white etching area formation in bearings under rolling contact fatigue

Liang, X.Z. and Rivera-Díaz-del-Castillo, P.E.J. (2022) Hydrogen-accelerated white etching area formation in bearings under rolling contact fatigue. International Journal of Fatigue, 159: 106753. ISSN 0142-1123

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Abstract

The presence of hydrogen can dramatically facilitate microstructural alterations in components subjected to rolling contact fatigue (RCF) potentially leading to premature failure. A dislocation-assisted carbon migration model is developed to describe the formation of hydrogen-influenced microstructural alterations such as white etching areas; the model incorporates rolling parameters such as maximum contact stress, number of cycles, rotational speed, and temperature. Kinetic Monte Carlo is adopted to describe hydrogen-dislocation interactions which alters dislocation mobility, accelerating white etching area formation whilst reducing fatigue life. The results are experimentally validated by microstructural characterisation and RCF testing.

Item Type:
Journal Article
Journal or Publication Title:
International Journal of Fatigue
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2211
Subjects:
?? bearing steelshydrogen embrittlementrolling contact fatiguewhite etching areasdislocations (crystals)etchingfatigue of materialsfrictionroller bearingssingle crystalscarbon migrationcontact stressmicrostructural alterationsmigration modellingpremature fai ??
ID Code:
166986
Deposited By:
Deposited On:
03 Mar 2022 13:30
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Jul 2024 11:48