Influence of repeated quenching on the rolling contact fatigue of bearing steel

Edson Costa Santos; Takashi Honda; Katsuyuki Kida

doi:10.1117/12.852314

14 April 2010 Influence of repeated quenching on the rolling contact fatigue of bearing steel

Edson Costa Santos, Takashi Honda, Katsuyuki Kida

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 752241 (2010) https://doi.org/10.1117/12.852314
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

Abstract

The rolling contact fatigue of JIS SUJ2 (high carbon high strength bearing steel) heat treated by repeated quenching was investigated. The microstructure of the bearing traces was observed before and after heat treatment by laser confocal microscope and scanning electron microscope. X-ray diffraction was used to measure changes in the retained austenite and the residual stresses on the bearing races' surface. The prior austenite-grain size was greatly reduced and the compressive stress at the surface of the material was increased by the heat treatment. Both factors contribute to the higher fatigue strength of the bearings.

Citation Download Citation

Edson Costa Santos, Takashi Honda, and Katsuyuki Kida "Influence of repeated quenching on the rolling contact fatigue of bearing steel", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 752241 (14 April 2010); https://doi.org/10.1117/12.852314

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