INTERGRANULAR EMBRITTLEMENT IN PLASMA CARBURIZED LAYER

Acta Metall Sin

1991, Vol. 27

Issue (5): 73-76 DOI:

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INTERGRANULAR EMBRITTLEMENT IN PLASMA CARBURIZED LAYER

XIA Lifang;MA Xinxin Harbin Institute of Technology

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XIA Lifang;MA Xinxin Harbin Institute of Technology. INTERGRANULAR EMBRITTLEMENT IN PLASMA CARBURIZED LAYER. Acta Metall Sin, 1991, 27(5): 73-76.

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Abstract The principal reason of the intergranular embrittlement in plasma carburized lay-er on 20Cr2Ni4A steel, analyzed by TEM and Auger spectra, was revealed to be due to the segregation of S, P and other impurities along prior austenite grain boundaries. The retained austenite in the layer is unrelated to the intergranular fracture caused in the region. However,the segregation of impurities may be eliminated by reheating and quenching.

Key words: carburizing plasma carburizing embrittlement impurities segregation

Received: 18 May 1991

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1991/V27/I5/73

1 Krauss G. Metall Trans, 1978; 9A: 1527
2 Xia Lifang. Lu Yuyan. Advances in Surface Treatment, Vol.Ⅱ. Pergamon Press, 1986: 195
3 Honeycombe R W K著,傅俊岩等译.钢的显微组织和性能.北京:冶金工业出版社,1985:218

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