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Martensite decay in micropitted gears

Lookup NU author(s): Dr Adrian OilaORCiD, Professor Brian Shaw, Christopher Aylott, Professor Steve BullORCiD


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Metallographic examination performed on a number of micropitted gears has revealed microstructural features similar to those reported in the literature in fatigued bearings, namely, dark etching regions and white etching bands. In addition, a new type of fatigue-induced microstructural constituent was observed close to the surface below asperities referred to as the plastic deformation region. Finally, it is shown that the initiation and propagation of cracks leading to the formation of micropits are related to the phase transformations mentioned previously. © IMechE 2005.

Publication metadata

Author(s): Oila A, Shaw BA, Aylott CJ, Bull SJ

Publication type: Article

Publication status: Published

Journal: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology

Year: 2005

Volume: 219

Issue: 2

Pages: 77-83

Print publication date: 01/04/2005

ISSN (print): 1350-6501

ISSN (electronic): 2041-305X

Publisher: Professional Engineering Publishing Ltd.


DOI: 10.1243/135065005X9790


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