Effects of RE on Critical Cooling Rate of Bearing-B Steel

Yi Sheng Zhao; Xin Ming Zhang; Zhi Guo Gao

doi:10.4028/www.scientific.net/AMR.535-537.761

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 535-537Effects of RE on Critical Cooling Rate of...

Effects of RE on Critical Cooling Rate of Bearing-B Steel

Abstract:

The law of phase change of bearing-B steel during continual cooling was studied by adopting dilatometer. The CCT curves of bearing-B steel were drawn, and the effects of RE on critical cooling rates were studied. The experimental results show that the start temperatures of martensite TM was decreased from 438 to 404°C. The critical cooling rate was simultaneously decreased from 33 to 15°C/s.