Final published version
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Hydrogen-accelerated white etching area formation in bearings under rolling contact fatigue
AU - Liang, X.Z.
AU - Rivera-Díaz-del-Castillo, P.E.J.
PY - 2022/6/30
Y1 - 2022/6/30
N2 - 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.
AB - 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.
KW - Bearing steels
KW - Hydrogen embrittlement
KW - Rolling contact fatigue
KW - White etching areas
KW - Dislocations (crystals)
KW - Etching
KW - Fatigue of materials
KW - Friction
KW - Roller bearings
KW - Single crystals
KW - Carbon migration
KW - Contact Stress
KW - Microstructural alterations
KW - Migration modelling
KW - Premature failures
KW - Rolling parameters
KW - Stress number
KW - Hydrogen
U2 - 10.1016/j.ijfatigue.2022.106753
DO - 10.1016/j.ijfatigue.2022.106753
M3 - Journal article
VL - 159
JO - International Journal of Fatigue
JF - International Journal of Fatigue
SN - 0142-1123
M1 - 106753
ER -