Conclusions
Preliminary heat treatment affects the properties of the nitrided case on aluminumfree steels containing carbide-forming elements. For annealed and normalized steels with a ferrite-pearlite structure the depth and hardness of the nitrided case are lower than for quenched and tempered steels with a structure of sorbite.
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Literature Cited
L. E. Rudin, "Effect of microstructure and hardness on the characteristics of the nitrided case," in: Transactions of the Leningrad Institute of Precision Mechanics and Optics [in Russian], No. 16 (1955), p. 45.
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Additional information
Pskov Gearwheel Factory. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 11–12, June, 1980.
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Rodicheva, I.B. Effect of preliminary heat treatment on the properties of the nitrided case on aluminum-free structural steels. Met Sci Heat Treat 22, 390–392 (1980). https://doi.org/10.1007/BF00693638
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DOI: https://doi.org/10.1007/BF00693638