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Running-in and micropitting behaviour of steel surfaces under mixed lubrication conditions

Clarke, A. ORCID:, Weeks, I. J. J., Snidle, R. W. ORCID: and Evans, H. P. ORCID: 2016. Running-in and micropitting behaviour of steel surfaces under mixed lubrication conditions. Tribology International 101 , pp. 59-68. 10.1016/j.triboint.2016.03.007

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The paper investigates the running-in of hardened steel surfaces under mixed lubrication conditions. Pairs of surfaces of both equal and differing hardness were loaded together under rolling/sliding conditions in a twin-disk rig, and the evolution of surface topography was investigated using in-situ profilometry. Evaluation of roughness parameters, height distributions and profile relocation showed that the running-in of these surfaces is a rapid process where the most prominent asperity tips undergo plastic deformation during the initial loading cycles. Finally, the pair of equal hardness disks, following further running in a separate series of experiments, was found to suffer from micro-pitting. This micropitting predominantly occurred along the tips of prominent asperities, and the potential link between running-in and surface failure is discussed.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Additional Information: This is an open access article under the terms of the CC-BY Attribution 4.0 International license.
Publisher: Elsevier
ISSN: 0301-679X
Funders: EPSRC, British Gear Association, Austrian Research Promotion Agency
Date of First Compliant Deposit: 30 March 2016
Date of Acceptance: 10 March 2016
Last Modified: 03 May 2023 19:32

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