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Effect of prior heat treatment on the properties of nitrided structural and tool steels

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Conclusions

  1. 1.

    Prior heat treatment before nitriding affects the mechanical properties of steels; the highest strength is achieved after temper hardening, and the maximum ductility is achieved after TCT.

  2. 2.

    The thickness of the nitrided layer on each of the test steels (U8, 40Kh, and 3Kh2V8) after temper hardening and TCT is practically the same, and the layer thickness is greater after normalizing.

  3. 3.

    For components which under working conditions should have higher strength properties, it is recommended that temper hardening is carried out before nitriding, and for articles which should exhibit higher ductility properties and impact strength, thermal cycling treatment is recommended.

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Literature cited

  1. 1.

    Yu. M. Lakhtin and Ya. D. Kogan, Nitriding of Steel [in Russian], Mashinostroenie, Moscow (1976).

  2. 2.

    I. B. Rodicheva, "Effect of prior heat treatment on the properties of the nitrided layer for aluminum-free structural steels," Metalloved. Term. Obrab. Met., No. 6, 11–12 (1980).

  3. 3.

    V. K. Fedyukin, Thermal Cycling Treatment for Steels and Cast Irons [in Russian], Leningrad State Univ. (1977).

  4. 4.

    B. S. Bokshtein, Diffusion in Metals [in Russian], Metallurgiya, Moscow (1978).

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Additional information

Bryansk Factory of Irrigation Machines. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 39–41, March, 1986.

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Cite this article

Simochkin, V.V. Effect of prior heat treatment on the properties of nitrided structural and tool steels. Met Sci Heat Treat 28, 211–214 (1986). https://doi.org/10.1007/BF00705395

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Keywords

  • Mechanical Property
  • Heat Treatment
  • Ductility
  • Nitrided
  • Layer Thickness