The Numerical Model of Electrothermal Deformations of Carbides in Bearing Steel as the Possible Cause of White Etching Cracks Initiation

verfasst von: Mihails Ščepanskis, Andris Jakovičs, Imants Kaldre, Walter Holweger, Bernard Nacke, Annika Martina Diederichs
Abstract: Despite the ongoing debates on influence of hydrogen uptake and penetration in the steel, pulsed and extraordinary fatigue on white etching cracks (WEC) formation in bearing steel SAE52100, the present paper proposes an alternative hypothesis on electrothermal initiation of the WEC. The hypothesis points to differences between electrical and thermal properties of elements of steel microstructure that lead sequentially to redistribution of current, resistivity heating, thermal expansion and deformations of the carbide particle. Appearance of a nano-void is also predicted by the model in the cases of the martensite and the bainite structures. The model also predicts higher probability of the WEC formation for the bainitic steel.
Organisationseinheit(en): Institut für Elektroprozesstechnik
Externe Organisation(en): University of Latvia
Schaeffler Technologies AG & Co. KG
Rheinisch-Westfälische Technische Hochschule Aachen (RWTH)
Typ: Artikel
Journal: Tribology letters
Band: 59
Anzahl der Seiten: 10
ISSN: 1023-8883
Publikationsdatum: 23.08.2015
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Werkstoffmechanik, Maschinenbau, Oberflächen und Grenzflächen, Oberflächen, Beschichtungen und Folien
Elektronische Version(en): https://doi.org/10.1007/s11249-015-0564-8 (Zugang: Geschlossen)

BibTeX

@article{2c0614e4c6b04d16940885f9d0de0231,
title = "The Numerical Model of Electrothermal Deformations of Carbides in Bearing Steel as the Possible Cause of White Etching Cracks Initiation",
abstract = "Despite the ongoing debates on influence of hydrogen uptake and penetration in the steel, pulsed and extraordinary fatigue on white etching cracks (WEC) formation in bearing steel SAE52100, the present paper proposes an alternative hypothesis on electrothermal initiation of the WEC. The hypothesis points to differences between electrical and thermal properties of elements of steel microstructure that lead sequentially to redistribution of current, resistivity heating, thermal expansion and deformations of the carbide particle. Appearance of a nano-void is also predicted by the model in the cases of the martensite and the bainite structures. The model also predicts higher probability of the WEC formation for the bainitic steel.",
keywords = "Bearing, Carbide, Deformation, Electric current, Steel, White etching cracks",
author = "Mihails {\v S}{\v c}epanskis and Andris Jakovi{\v c}s and Imants Kaldre and Walter Holweger and Bernard Nacke and Diederichs, {Annika Martina}",
year = "2015",
month = aug,
day = "23",
doi = "10.1007/s11249-015-0564-8",
language = "English",
volume = "59",
journal = "Tribology letters",
issn = "1023-8883",
publisher = "Springer New York",
number = "2",
}