In the first part of the article, published in the previous issue of this journal, on the basis of studying features of the process a physical and mathematical model is presented of carbide formation during heat-resistant steel vacuum carburizing based on the example of VKS-5. In the second part of this article on the basis of analyzing the calculation model physical features are presented for formation of cementite type carbide phase taking account of steel VKS-5 alloying with chromium and nickel, and also temperature. Simultaneously, features of special molybdenum, tungsten, vanadium and niobium carbide formation are considered. The expediency of increasing chromium content in a new generation of heat-resistant steels alloyed with nickel is substantiated.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 32 – 37, June, 2013.
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Semenov, M.Y. Control of Heat-Resistant Steel Carburized Layer Structure. Part II. Met Sci Heat Treat 55, 316–321 (2013). https://doi.org/10.1007/s11041-013-9627-3
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DOI: https://doi.org/10.1007/s11041-013-9627-3