Abdullah, M. U. and Khan, Z. A., 2022. Further Investigations and Parametric Analysis of Microstructural Alterations under Rolling Contact Fatigue. Materials, 15 (22), 8072.
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Official URL: https://www.mdpi.com/journal/materials
Abstract
Bearing elements under rolling contact fatigue (RCF) exhibit microstructural features, known as white etching bands (WEBs) and dark etching regions (DERs). Formation mechanism of these microstructural features had been questionable and therefore warranted this study to gain further understanding. Current research describes mechanistic investigations of standard AISI 52100 bearing steel balls subjected to RCF testing under tempering conditions. Subsurface analyses of RCF-tested samples at tempering conditions have indicated that the microstructural alterations are progressed with subsurface yielding and primarily dominated by thermal tempering. Further-more, bearing balls are subjected to static load tests in order to evaluate the effect of lattice de-formation. It is suggested from the comparative analyses that a complete rolling sequence with non-proportional stress history is essential for the initiation and progression of WEBs, supported by the combination of carbon flux assisted by dislocation and thermally activated carbon diffusion. These novel findings will lead to developing a contemporary and new-fangled prognostic model applied to microstructural alterations.
Item Type: | Article |
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ISSN: | 1996-1944 |
Additional Information: | Funded by Extended: Finite Element Modelling of the Deep Zone Residual Stresses in Rolling/Sliding Contact Bearing Elements |
Uncontrolled Keywords: | Bearing Steel; Diffusion; Microstructural Alterations; Rolling Contact Fatigue; Tempering |
Group: | Faculty of Science & Technology |
ID Code: | 37801 |
Deposited By: | Symplectic RT2 |
Deposited On: | 15 Nov 2022 13:42 |
Last Modified: | 24 Nov 2022 09:53 |
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