Conclusions
Anomalies in the properties of the steels investigated were observed after quenching from temperatures 5–10°C below Ac3. Quenching from these temperatures results in higher properties than quenching from standard temperatures. With quenching from temperatures near Ac1 the toughness of the steels is minimal.
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Literature cited
Steels for Machine Construction [in Russian], OMTRM 0056-001-65, Mashinostroenie, Moscow (1965).
B. Livshits, Physical Properties of Metals and Alloys [in Russian], Mashgiz, Moscow (1959).
S. S. D'yachenko and O. P. Fomina, "Characteristics of structures of incomplete recrystallization and their effect on the properties of steels," Metal. i Term. Obrabotka Metal., No. 1, 9–13 (1970).
Additional information
All-Union Scientific-Research Institute of Compressor Machine Construction. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 57–58, March, 1975.
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Marchenko, V.G. Quenching of steels from intercritical temperatures. Met Sci Heat Treat 17, 245–246 (1975). https://doi.org/10.1007/BF00663694
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DOI: https://doi.org/10.1007/BF00663694