Conclusions
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1.
Alloying of type 60Kh18ANG16 chrome—manganese steel with molybdenum, niobium, tantalum and vanadium increases its intergranular corrosion resistance after provoking heating at 600–850°C since these elements tie up carbon in cooling of the steel from the molten condition into high-temperature, carbides and eliminate formation at the austenitic grain boundaries of type (Cr, Mn)23C6 chromium carbides causing intergranular corrosion.
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2.
Nitrides of the group IVA elements Zr and Ti (Hf) and also of Al, Ce, and B and carbides (carbonitrides) of the group VIA elements Cr and Mo and of the group VA elements Nb, Ta, and V have the greatest probability of formation in cooling of steel from the molten condition.
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Additional information
Dolgoprudnyi Machine Building Production Union. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 17–20, May, 1993.
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Yarkovoi, V.S. Thermodynamic analysis and intergranular corrosion of corrosion-resistant chrome-manganese steels with nitrogen. Met Sci Heat Treat 35, 273–277 (1993). https://doi.org/10.1007/BF00780595
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DOI: https://doi.org/10.1007/BF00780595