Conclusions
The overheated coarse-grained structure of high-alloy die steels can be refined as follows.
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a)
For steels with supercooled austenite of low resistance in the pearlitic region (3Kh2V8F and 40Kh·5MF) by ensuring the pearlitic transformation during repeated annealing in the pearlitic transformation range.
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b)
For steels with austenite of high resistance in the pearlitic region (27Kh2N2MVF type) by rapid heating to standard recrystallization temperatures, or long preliminary tempering at subcritical temperatures, or multiple recrystallization.
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Literature cited
Yu. M. Kaletin and V. D. Sadovskii, Metal. i Term. Obrabotka Metal., No. 2 (1966).
Additional information
Uralmashzavod. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 8, pp. 65–66, August, 1969.
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Sklyuev, P.V., Pertsovskaya, E.V. Correction of overheating in high-strength die steels. Met Sci Heat Treat 11, 656–657 (1969). https://doi.org/10.1007/BF00652130
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DOI: https://doi.org/10.1007/BF00652130