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�ؼ�� �� ؼ��ʣ��и�, G20CrNi2MoA, �Ͻ�Ԫ��, ��״��֯ , �ȴ��

Abstract��The normalizing and fully annealing tests were performed on the two samples of carburized bearing steel G20CrNi2MoA,which has two kinds of original structures; the isothermal annealing test has been done on the sample with normal structure, it was observed and shown that band structure can be eliminated by normalizing, while fully annealing makes the band structure worse, and the higher the isothermal annealing temperature is, the worse the banded structure is, which happens more obviously when the temperature is above 650 ��.

Key words�� Key words:bearing steel G20CrNi2MoA alloy element banded structure heat treatment

�ո��: 2012-04-26 ��: 2012-09-26

ͨѶ��: ��г� E-mail: 444078576@qq.com

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��гʣ��£��Ӧ��ԣ��ʸգ�½��. G20CrNi2MoA��״��֯��γɻ��Ƽ��[J]. �й��ڿ��, 2012, 30(5): 18-22. XU Shang-cheng,ZHOU Li-xin,LEI Ying-hua,LIU Guang-hui,WANG Zhi-gang,LU He-ming. G20CrNi2MoA Banded Structure Formation Mechanism and Methods to Eliminate. Chinese Journal of Iron and Steel, 2012, 30(5): 18-22.

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http://gt.chinamet.cn/Jweb_wlcs/CN/ �� http://gt.chinamet.cn/Jweb_wlcs/CN/Y2012/V30/I5/18