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

Clarke, Alastair ORCID: https://orcid.org/0000-0002-3603-6000, Weeks, Ingram, Snidle, Raymond Walter ORCID: https://orcid.org/0000-0001-9333-7195 and Evans, Henry Peredur ORCID: https://orcid.org/0000-0002-6989-0190 2016. Running-in and micropitting behaviour of steel surfaces under mixed lubrication conditions. Presented at: 20th International Colloquium Tribology, Esslingen, Germany, 12 - 14 January, 2016. Tribology - Industrial and Automotive Lubrication. Esslingen, Ostfildern: Techniscke Akademie Esslingen, p. 117.

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Abstract

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:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TJ Mechanical engineering and machinery
Publisher:	Techniscke Akademie Esslingen
Last Modified:	18 Jul 2023 22:08
URI:	https://orca.cardiff.ac.uk/id/eprint/87167

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