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A unified theory for microstructural alterations in bearing steels under rolling contact fatigue

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A unified theory for microstructural alterations in bearing steels under rolling contact fatigue. / Fu, Hanwei; Rivera-Díaz-del-Castillo, Pedro E.J.

In: Acta Materialia, Vol. 155, 15.08.2018, p. 43-55.

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Fu H, Rivera-Díaz-del-Castillo PEJ. A unified theory for microstructural alterations in bearing steels under rolling contact fatigue. Acta Materialia. 2018 Aug 15;155:43-55. Epub 2018 May 26. doi: 10.1016/j.actamat.2018.05.056

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@article{c21be61d4ddb40b5972300cb4a96b4f7,
title = "A unified theory for microstructural alterations in bearing steels under rolling contact fatigue",
abstract = "Three major types of microstructural alterations occurring under rolling contact fatigue, white etching areas (WEAs), dark etching regions (DERs) and white etching bands (WEBs), are modelled under a unified approach: dislocation-assisted carbon migration theory. Following our previous work on DERs and WEBs, a novel model is proposed to describe dislocation cell formation in WEAs. The proposed model yields predictions of WEAs appearance, agreeing with experimental observations. Bearing life can be estimated by the WEA appearance model. The three microstructural alterations models are combined and, for the first time, it becomes possible to predict the occurrence and the formation progress of WEAs, DERs and WEBs with a unified theory. Microstructural alteration maps are plotted as a function of number of cycles, temperature, contact pressure and stress cycle frequency. The models are validated by the experimental results reported over the last 50 years.",
keywords = "Rolling contact fatigue, Bearing steels, White etching areas, Dark etching regions, White etching bands",
author = "Hanwei Fu and Rivera-D{\'i}az-del-Castillo, {Pedro E.J.}",
year = "2018",
month = aug,
day = "15",
doi = "10.1016/j.actamat.2018.05.056",
language = "English",
volume = "155",
pages = "43--55",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "PERGAMON-ELSEVIER SCIENCE LTD",

}

RIS

TY - JOUR

T1 - A unified theory for microstructural alterations in bearing steels under rolling contact fatigue

AU - Fu, Hanwei

AU - Rivera-Díaz-del-Castillo, Pedro E.J.

PY - 2018/8/15

Y1 - 2018/8/15

N2 - Three major types of microstructural alterations occurring under rolling contact fatigue, white etching areas (WEAs), dark etching regions (DERs) and white etching bands (WEBs), are modelled under a unified approach: dislocation-assisted carbon migration theory. Following our previous work on DERs and WEBs, a novel model is proposed to describe dislocation cell formation in WEAs. The proposed model yields predictions of WEAs appearance, agreeing with experimental observations. Bearing life can be estimated by the WEA appearance model. The three microstructural alterations models are combined and, for the first time, it becomes possible to predict the occurrence and the formation progress of WEAs, DERs and WEBs with a unified theory. Microstructural alteration maps are plotted as a function of number of cycles, temperature, contact pressure and stress cycle frequency. The models are validated by the experimental results reported over the last 50 years.

AB - Three major types of microstructural alterations occurring under rolling contact fatigue, white etching areas (WEAs), dark etching regions (DERs) and white etching bands (WEBs), are modelled under a unified approach: dislocation-assisted carbon migration theory. Following our previous work on DERs and WEBs, a novel model is proposed to describe dislocation cell formation in WEAs. The proposed model yields predictions of WEAs appearance, agreeing with experimental observations. Bearing life can be estimated by the WEA appearance model. The three microstructural alterations models are combined and, for the first time, it becomes possible to predict the occurrence and the formation progress of WEAs, DERs and WEBs with a unified theory. Microstructural alteration maps are plotted as a function of number of cycles, temperature, contact pressure and stress cycle frequency. The models are validated by the experimental results reported over the last 50 years.

KW - Rolling contact fatigue

KW - Bearing steels

KW - White etching areas

KW - Dark etching regions

KW - White etching bands

U2 - 10.1016/j.actamat.2018.05.056

DO - 10.1016/j.actamat.2018.05.056

M3 - Journal article

VL - 155

SP - 43

EP - 55

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

ER -