Running-in and micropitting behaviour of steel surfaces under mixed lubrication conditions
| Autor: | Ingram Weeks, Henry Peredur Evans, Alastair Clarke, Raymond Walter Snidle |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Mechanical Engineering Metallurgy 02 engineering and technology Surfaces and Interfaces Surface finish 021001 nanoscience & nanotechnology Roughness Surfaces Coatings and Films Micro pitting Hardened steel 020303 mechanical engineering & transports TA 0203 mechanical engineering Mechanics of Materials Lubrication Profilometer Mixed lubrication 0210 nano-technology Running-in Asperity (materials science) |
| Zdroj: | Tribology International. 101:59-68 |
| ISSN: | 0301-679X |
| DOI: | 10.1016/j.triboint.2016.03.007 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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