The relationship between 100Cr6 steelmaking, inclusion microstructure and rolling contact fatigue performance

Fu, Hanwei and Rydel, Jakub Jelita and Gola, Adam M. and Yu, Feng and Geng, Ke and Lau, Chenghan and Luo, Haiwen and Rivera-Díaz-del-Castillo, Pedro E.J. (2019) The relationship between 100Cr6 steelmaking, inclusion microstructure and rolling contact fatigue performance. International Journal of Fatigue, 129. ISSN 0142-1123

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Abstract

A processing-microstructure-performance approach is followed to study three bearing steel samples manufactured from the most frequently used continuous casting routes. The inclusion microstructures of the samples were altered by varying the metallurgy and hot working conditions. Inclusion size distribution information is obtained, showing the steel-making route that results in the highest cleanliness. 3D analysis of inclusion morphologies using electrolytic extraction indicates the irregularities on the surface to be favourable sites for crack nucleation under RCF. Flat-washer and ball-on-rod tests were conducted to study the rolling contact fatigue life of the steels, with the results from the flat-washer testing method being more representative for bearing life. This research suggests that early fatigue of bearings is governed by silicate fragmentation and late fatigue by TiN inclusions.

Item Type:
Journal Article
Journal or Publication Title:
International Journal of Fatigue
Additional Information:
This is the author’s version of a work that was accepted for publication in International Journal of Fatigue. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Fatigue, 129, 2019 DOI: 10.1016/j.ijfatigue.2018.11.011
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2209
Subjects:
ID Code:
144776
Deposited By:
Deposited On:
08 Jul 2020 15:20
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Oct 2020 03:48