期刊
TRIBOLOGY INTERNATIONAL
卷 101, 期 -, 页码 59-68出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2016.03.007
关键词
Running-in; Mixed lubrication; Roughness
资金
- Engineering and Physical Sciences Research Council [EP/K031635/1, EP/G06024X/1, EP/L021757/1, 1071429] Funding Source: researchfish
- EPSRC [EP/G06024X/1, EP/K031635/1, EP/L021757/1] Funding Source: UKRI
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. (C) 2016 The Authors. Published by Elsevier Ltd.
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