Conclusions
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1.
Stable formation of vermicular graphite in magnesium iron with titanium is provided by stabilization of the magnesium content at a certain level in the microvolumes of the solidifying molten metal.
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2.
The formation of vermicular graphite in magnesium iron is related to a certain content of magnesium in the structural constituents occupying an intermediate position between its content in irons with lamellar and spheroidal graphite.
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3.
Production procedures provinding strengthening of the inoculating effect of magnesium, the addition of rare-earth metals and mold inoculation, promote an increase in the uniformity of distribution of the inoculant between the structural constituents of the iron.
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Literature cited
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A. M. Petrichenko, L. A. Solntsev, V. A Kolyada, and A. M. Zaidenberg, "The investigation of the in-mould process and its using in the production of high strength iron casting inside faced chill moulds", in: 45th International Foundry Congress (Budapest), No. 24 (1978), p. 10.
G. M. Kimstach, Yu. P. Mukhovetskii, A. D. Postnova, and R. B. Brotsailo, "The microdistribution of magnesium in the structure of high-strength iron", Lit. Proizvod., No. 7, 5–6 (1984).
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Additional information
Kharkov Automobile and Road Institute. Kirovograd Institute for Agricultural Machinery Building. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 56–58, June, 1988.
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Kropivnii, V.N., Solntsev, L.A. & Zaidenberg, A.M. Distribution of magnesium in the structure of cast iron with vermicular graphite. Met Sci Heat Treat 30, 468–471 (1988). https://doi.org/10.1007/BF00704904
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DOI: https://doi.org/10.1007/BF00704904