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

Clarke, Alastair, Weeks, Ingram, Snidle, Raymond Walter and Evans, Henry Peredur 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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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: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
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: 23 May 2019 21:17
URI: http://orca.cf.ac.uk/id/eprint/88215

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