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Title: Metallurgical phase changes in lubrication
Author: Torrance, Archibald Andrew
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1972
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The white layers formed on EN31 and a grey cast iron during scuffing have been studied by a variety of metallurgical techniques, including transmission electron microscopy. This has clearly shown the structure of the layer on EN31, and has given an indication of that on cast iron, matters about which there has been controversy. From the structure of the layer its hardness, and the variation in hardness below the surface, it has been possible to deduce the conditions of stress and temperature which prevail at a scuffing surface. These in turn indicate a probable reason for the high wear rates which occur during scuffing. Further work was undertaken to investigate the possibility of a hard white layer having some effect in the running of cast iron. No such effect was found, but some interesting microscopical evidence was discovered for a mechanism of wear by fatigue in the pin on disc machine.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available