Conclusions
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1.
With a small quantity of retained austenite in the carburized case the resistance to scoring of steel 20Kh2N4A decreases sharply despite the substantial hardness of the surface layer.
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2.
An elevated concentration of highly alloyed retained austenite in carburized and carbonitrided steel 20Kh2N4A subjected to immediate quenching increases the scoring resistance of the steel.
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Literature cited
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Additional information
Moscow Automechanical Institute, State Design, Construction, and Experimental Institute of Coal Mining Machinery. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 70–73, January, 1978.
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Kozlovskii, I.S., Manevskii, S.E. & Sokolov, I.I. Effect of retained austenite on the resistance to scoring of steel 20Kh2N4A. Met Sci Heat Treat 20, 78–80 (1978). https://doi.org/10.1007/BF00670453
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DOI: https://doi.org/10.1007/BF00670453