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Peculiarities in the formation of the properties of the diffusion layer in the nitriding process

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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    In the nitriding process the steel is not monotonically saturated with nitrogen. The period during which the thickness of the nitride zone increases alternates with the latent period, in which the thickness of the layer remains practically unchanged. These periods coincide in time with the periods of increasing and decreasing hardness encountered during diffusion saturation.

  2. 2.

    During saturation, a solid solution supersaturated with nitrogen forms; a certain attendant increase in hardness is the result of solid-solution hardening and increase of the thickness of the nitride zone; however, the basic increase in hardness of the layer is attained during cooling in consequence of dispersion hardening of the α-phase.

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Literature cited

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Authors
  1. A. P. Gulyaev
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  2. V. I. Konoval'tsev
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  3. V. V. Nikitin
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Additional information

I. P. Bardin Central Research Institute of Ferrous Metallurgy, All-Union Research Institute of Machine Building for Rubber Technology, Tambov. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 27–30, October, 1983.

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Gulyaev, A.P., Konoval'tsev, V.I. & Nikitin, V.V. Peculiarities in the formation of the properties of the diffusion layer in the nitriding process. Met Sci Heat Treat 25, 745–748 (1983). https://doi.org/10.1007/BF00712250

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