Conclusions
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1.
Strain aging of martensite in low-and medium-alloy steels with 0.09–0.35% C substantially increases the strength with a fully acceptable decrease of the ductility and toughness.
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2.
To obtain a good combination of mechanical properties with strain aging of martensite in lowalloy steels it is necessary to have the optimal carbon concentration (0.2–0.3%), to ensure sufficient and even deformation of the quenched steel through the section, which is achieved with over 5% reduction, and to use high-temperature thermomechanical treatment as the preliminary treatment.
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Literature cited
M. L. Bernshtein, Thermomechanical Treatment of Metals and Alloys [in Russian], Vol. 2, Metallurgiya, Moscow (1968), pp. 603–642.
G. I. Ashmarina et al., Fiz. i Khim. Obrabotki Mat.5, 80–85 (1968).
Additional information
Dhepropetrovsk Metallurgical Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 58–60, January, 1974.
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Starodubov, K.F., Kasilov, A.N. Increase in the strength of steel with strain aging of martensite. Met Sci Heat Treat 16, 60–62 (1974). https://doi.org/10.1007/BF00679205
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DOI: https://doi.org/10.1007/BF00679205