Conclusions
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1.
Low-temperature chemicothermal treatment in ammonia and carbon dioxide makes it possible to obtain in a relatively short time (2–3 h) a carbonitride zone of considerable depth (20–25 μ at 570° and 50–60 μ at 620°); the depth of the diffusion zone reaches 0.4–0.5 mm.
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2.
The distribution of residual macrostresses in the case depends on the structural factor causing the formation of compressive stresses.
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3.
It follows from the interplanar distance of line (103) of ε phase that the concentration gradient of the diffusing elements varies both with the processing time and the cooling rate.
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Additional information
Bulgaria. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 66–68, November, 1978.
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Fuks, M.Y., Ruseva, E.V., Rusev, R.D. et al. Structure and stresses in the nitrided case. Met Sci Heat Treat 20, 952–955 (1978). https://doi.org/10.1007/BF00713768
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DOI: https://doi.org/10.1007/BF00713768