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Lookup NU author(s): Professor Brian Shaw,
Dr Fouad Abudaia,
Emeritus Professor Terry Evans
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
Carburised helical gears with high retained austenite were tested for surface contact fatigue. The retained austenite before testing was 60% and was associated with low hardness near the surface. However, the gears showed good pitting resistance, with contact fatigue strength greater than 1380 MPa. Detailed examination carried out on a gear that had been tested in contact on one flank, on each tooth, in a back-to-back, test revealed that about 50% of the initial retained austenite was transformed to martensite during the test. Transformation was stress or strain assisted and was limited to a thin layer of 10μm thickness or less at the surface. The increase in surface contact fatigue strength is attributed to the increased hardness in the mechanically transformed layer.
Author(s): Shaw BA; Evans JT; Abudaia FB
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: HeatTreating 2000: Proceedings of the 20th Conference
Year of Conference: 2001
Publisher: Materials Information Society