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Effect of tempering on the character of failure of carbonitrided steel

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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The toughness of low-carbon steel carbonitrided in EFCD is characterized by the total work spent on crack initiation and crack propagation.

  2. 2.

    The work of crack initiation amounts to 35–45% of the total work of failure.

  3. 3.

    The presence of γ' phase (Fe4N) in the case tempered at 300o is responsible for the brittle fracture of carbonitrided samples that fail without any noticeable signs of macroplastic deformation.

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Literature cited

  1. V. B. Gorbachev, É. I. Vrzhashch, and E. T. Yutsis, Chemicothermal Treatment of Metals by Ionization of the Gaseous Atmosphere with Electric Field Corona Discharge [in Russian], Informatsionnyi Listok, TsNTI, Nos. 290-291, Irkutsk (1970).

  2. V. D. Zelenova, “Resistance to brittle fracture of steel with a surface-hardened layer”, Metal. i Term. Obrabotka Metal., No. 6, 49–51 (1970).

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Authors
  1. É. I. Vrzhashch
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  2. V. B. Gorbachev
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  3. E. É. Vrzhashch
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Additional information

Irkutsk Agricultural Institute, Irkutsk State Pedagogical Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 65–67, March, 1973.

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Vrzhashch, É.I., Gorbachev, V.B. & Vrzhashch, E.É. Effect of tempering on the character of failure of carbonitrided steel. Met Sci Heat Treat 15, 249–250 (1973). https://doi.org/10.1007/BF00648167

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  • DOI: https://doi.org/10.1007/BF00648167

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