Conclusions
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1.
We showed the possibility of using HTTMT with a reduced austenite deformation temperature (in the range of Ac3−Ar3) for chromium-manganese-silicon steel, which increases σb and σ0.2 by comparison with higher deformation temperatures (above Ac3). The use of reduced austenite deformation temperatures in HTTMT also substantially inhibits the development of recrystallization processes.
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2.
The characteristics of plasticity, ductility, and resistance to brittle fracture (sensitivity to notches and cracks) show the advantage of an austenite deformation temperature of 900°C by comparison with the other temperatures investigated (1000, 820, and 780°C).
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Literature cited
V. I. Sarrak and R. I. Éntin, MiTOM, No. 4 (1963).
B. A. Drozdovskii and Ya. B. Fridman, Influence of Cracks on the Mechanical Properties of Structural Steels [in Russian], Metallurgizdat, Moscow (1960).
G. Irvin, Fracture, in: Handbuch der Physik, Vol. 4 (1958).
Additional information
Institute of Metallurgy of the Academy of Sciences of the USSR. Translated from Metallovedenic i Termicheskaya Obrabotka Metallov, No. 12, pp. 27–30, December, 1967.
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Pridantsev, M.V., Ivantsova, É.I. Effect of high-temperature thermomechanical treatment on the mechanical properties of chromium-manganese-silicon steel. Met Sci Heat Treat 9, 900–902 (1967). https://doi.org/10.1007/BF00662541
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DOI: https://doi.org/10.1007/BF00662541