Hydrogen-accelerated white etching area formation in bearings under rolling contact fatigue
Hydrogen-accelerated white etching area formation in bearings under rolling contact fatigue
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.
Bearing steels, Hydrogen embrittlement, Rolling contact fatigue, White etching areas
Liang, X.Z.
a3a45c11-e85d-43e7-82a7-15192ec48bd2
Rivera-Díaz-del-Castillo, P.E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
21 February 2022
Liang, X.Z.
a3a45c11-e85d-43e7-82a7-15192ec48bd2
Rivera-Díaz-del-Castillo, P.E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
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].
(doi:10.1016/j.ijfatigue.2022.106753).
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.
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More information
Accepted/In Press date: 18 January 2022
e-pub ahead of print date: 12 February 2022
Published date: 21 February 2022
Keywords:
Bearing steels, Hydrogen embrittlement, Rolling contact fatigue, White etching areas
Identifiers
Local EPrints ID: 492229
URI: http://eprints.soton.ac.uk/id/eprint/492229
ISSN: 0142-1123
PURE UUID: bba2b93c-22f4-45ed-98d5-f6843d926b36
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Date deposited: 22 Jul 2024 16:58
Last modified: 23 Jul 2024 02:08
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Contributors
Author:
X.Z. Liang
Author:
P.E.J. Rivera-Díaz-del-Castillo
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