Conclusions
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1.
The optimum combination of strength and ductility in steel is ensured by at least 90% martensite after quenching.
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2.
The effect of the alloyed elements on the quenching depth must also be taken into account.
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3.
Alloyed elements also affect impact strength and particularly, low temperature brittleness and brittleness induced by tempering. This effect must be taken into consideration in choosing steels for critical machine parts.
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Literature cited
Handbook of ASM, Vol. 1, USA (1961).
Kehemann, Luham, and Troiano, “TASM” (1957).
Puzak, Esepbacher, and Pellini, “Welding Res. Supp.” (1952).
Additional information
MAMI
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 30–40, May, 1963
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Kozlovskii, I.S. Factors determining the choice of structural steels. Met Sci Heat Treat 5, 275–281 (1963). https://doi.org/10.1007/BF00649337
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DOI: https://doi.org/10.1007/BF00649337