A model of diffusion growth of carbide-phase particles in the carburized layer of heat-resistant steels
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A mathematical model of carburization of a complexly alloyed heat-resistant steel is suggested for predicting the chemical and phase composition and structure of diffusion layers that allows for formation of particles of the excess carbide phase in the carburization process. A computer-aided solution of the set of nonlinear equations makes it possible to compute the distribution of the carbon concentration, the volume fraction of the carbide phase, and the distribution of its particles over the thickness of the diffusion layer.
KeywordsCarbide Austenite Cementite Carburization Carbon Concentration
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- 1.V. M. Pereverzev, V. I. Kolmykov, and V. A. Vorotnikov, “Effect of carbides on the resistance of carburized steels to wear in a quartz abrasive”,Metalloved. Term. Obrab. Met., No. 4, 45–47 (1990).Google Scholar
- 2.S. I. Kantor, E. Z. Chernyakhovskii, and S. S. Potapova, “Gas atmospheres in carburization”,Trudy VNIITeploproekt, No. 34, 44–53 (1974).Google Scholar
- 3.“A method for diagnosing the process of surface impregnation of steels and a device for its implementation, Patent No. 2048601 RU, MKI6 C23 C8/36”,Izobr. Stran Mira, No. 3 (1995).Google Scholar
- 4.B. Ya. Lyubov,The Kinetworkic Theory of Phase Transformations [in Russian], Metallurgiya, Moscow (1968).Google Scholar
- 5.E. Fromm and E. Gebhardt,Gases and Carbon in Metals [Russian translation], Metallurgiya, Moscow (1980).Google Scholar
- 6.V. M. Pereverzev, “The kinetworkics and mechanisms of carbide formation in chromium steels under carburization”,Metalloved. Term. Obrab. Met., No. 11, 21–23 (1985).Google Scholar
- 7.J. Christian,The Theory of Transformations in Metals and Alloys, Pergamon Press, Oxford (U.K.) (1975).Google Scholar