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Effects of Cooling Rate on Metallographic Structure and Hardness of Bearing-B Steel

Yisheng Zhao, Xinming Zhang
2012 Proceedings of the 2nd International Conference on Electronic and Mechanical Engineering and Information Technology (2012)   unpublished

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Effects of cooling rate on metallographic and hardness of bearing-B steel were investigated in present research. The results showed it consists of ferrite and pearlite formed in the initial stage of the transformation in the studied bearing-B steels cooled at 0.5 ℃/s. For the higher cooling rate than 10℃/s, it consisted of bainite and martensite formed in the initial stage of the transformation. All the results showed that the hardenability of this alloy was sufficient to avoid any elevated
more » ... erature transformation which steel sheet was expected to be cooled at rates from 0.5 to 20 ℃/s. The hardness of specimens was rapidly increased for the higher cooling rate than 10℃/s. The peak value of the hardness was captured corresponding to the cooling rate of 20℃/s though its invariant then.
doi:10.2991/emeit.2012.255 fatcat:csxrsmpe2fhzpkwzfumwv3qaem
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Yisheng Zhao, Xinming Zhang. "Effects of Cooling Rate on Metallographic Structure and Hardness of Bearing-B Steel." Proceedings of the 2nd International Conference on Electronic and Mechanical Engineering and Information Technology (2012) (2012)