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Strain-induced martensite decay in bearing steels under rolling contact fatigue: modelling and atomic-scale characterisation

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Strain-induced martensite decay in bearing steels under rolling contact fatigue : modelling and atomic-scale characterisation. / Fu, Hanwei; Song, Wenwen; Galindo-Nava, Enrique I. et al.

In: Acta Materialia, Vol. 139, 15.10.2017, p. 163-173.

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Fu H, Song W, Galindo-Nava EI, Rivera-Díaz-del-Castillo PEJ. Strain-induced martensite decay in bearing steels under rolling contact fatigue: modelling and atomic-scale characterisation. Acta Materialia. 2017 Oct 15;139:163-173. Epub 2017 Aug 8. doi: 10.1016/j.actamat.2017.08.005

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Fu, Hanwei ; Song, Wenwen ; Galindo-Nava, Enrique I. et al. / Strain-induced martensite decay in bearing steels under rolling contact fatigue : modelling and atomic-scale characterisation. In: Acta Materialia. 2017 ; Vol. 139. pp. 163-173.

Bibtex

@article{32c27ca6927247819c0fb856cf4b91cb,
title = "Strain-induced martensite decay in bearing steels under rolling contact fatigue: modelling and atomic-scale characterisation",
abstract = "Martensite decay in bearing steels manifested as dark etching regions (DERs) under rolling contact fatigue (RCF) is modelled. The proposed model is established based on a dislocation-assisted carbon migration mechanism. The proposed model is capable of predicting the progress of DER formation and the corresponding mechanical property evolution with increasing number of cycles, in good agreement with the experimental data reported throughout seventy years. The effects of RCF testing conditions on DER formation are studied and a useful tool, DER% maps, is developed for illustrating the temperature, contact pressure and number of cycles for DER occurrence. Moreover, an atom probe tomography study is carried out, revealing the nature of DER ferrite and obtaining strong evidence supporting the postulated DER formation mechanism. The successful application of the dislocation assisted carbon migration mechanism to DER formation provides a plausible explanation to the phenomenon of martensite decay under rolling contact fatigue.",
keywords = "Martensite decay, Rolling contact fatigue, Microstructural alteration, Fatigue modelling, Atom probe tomography",
author = "Hanwei Fu and Wenwen Song and Galindo-Nava, {Enrique I.} and Rivera-D{\'i}az-del-Castillo, {Pedro E.J.}",
year = "2017",
month = oct,
day = "15",
doi = "10.1016/j.actamat.2017.08.005",
language = "English",
volume = "139",
pages = "163--173",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "PERGAMON-ELSEVIER SCIENCE LTD",

}

RIS

TY - JOUR

T1 - Strain-induced martensite decay in bearing steels under rolling contact fatigue

T2 - modelling and atomic-scale characterisation

AU - Fu, Hanwei

AU - Song, Wenwen

AU - Galindo-Nava, Enrique I.

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

PY - 2017/10/15

Y1 - 2017/10/15

N2 - Martensite decay in bearing steels manifested as dark etching regions (DERs) under rolling contact fatigue (RCF) is modelled. The proposed model is established based on a dislocation-assisted carbon migration mechanism. The proposed model is capable of predicting the progress of DER formation and the corresponding mechanical property evolution with increasing number of cycles, in good agreement with the experimental data reported throughout seventy years. The effects of RCF testing conditions on DER formation are studied and a useful tool, DER% maps, is developed for illustrating the temperature, contact pressure and number of cycles for DER occurrence. Moreover, an atom probe tomography study is carried out, revealing the nature of DER ferrite and obtaining strong evidence supporting the postulated DER formation mechanism. The successful application of the dislocation assisted carbon migration mechanism to DER formation provides a plausible explanation to the phenomenon of martensite decay under rolling contact fatigue.

AB - Martensite decay in bearing steels manifested as dark etching regions (DERs) under rolling contact fatigue (RCF) is modelled. The proposed model is established based on a dislocation-assisted carbon migration mechanism. The proposed model is capable of predicting the progress of DER formation and the corresponding mechanical property evolution with increasing number of cycles, in good agreement with the experimental data reported throughout seventy years. The effects of RCF testing conditions on DER formation are studied and a useful tool, DER% maps, is developed for illustrating the temperature, contact pressure and number of cycles for DER occurrence. Moreover, an atom probe tomography study is carried out, revealing the nature of DER ferrite and obtaining strong evidence supporting the postulated DER formation mechanism. The successful application of the dislocation assisted carbon migration mechanism to DER formation provides a plausible explanation to the phenomenon of martensite decay under rolling contact fatigue.

KW - Martensite decay

KW - Rolling contact fatigue

KW - Microstructural alteration

KW - Fatigue modelling

KW - Atom probe tomography

U2 - 10.1016/j.actamat.2017.08.005

DO - 10.1016/j.actamat.2017.08.005

M3 - Journal article

VL - 139

SP - 163

EP - 173

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

ER -