Conclusions
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1.
Accelerated cooling of 22K steel increases its strength and decreases its ductility. The increase in strength depends on the cooling rate; when the cooling rate is 14 deg/sec the ultimate strength and the yield strength increases 10 kg/mm2.
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2.
Tempering at 650°C changes the mechanical properties very little.
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Literature cited
M. E. Blanter, N. A. Kulakov, I. M. Sergeichev, T. A. Mikhin, S. D. Fainbron, MiTOM (1958), No. 12.
M. E. Blanter, Methods of Testing Metals and Treatment of the Results [in Russian], Moscow, Metallurgizdat (1952).
Additional information
Altai Polytechnical Institute Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, p. 45, June, 1964
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Svishchenko, V.T. Hardening 22K steel by heat treatment. Met Sci Heat Treat 6, 378–379 (1964). https://doi.org/10.1007/BF00775334
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DOI: https://doi.org/10.1007/BF00775334