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Effect of nitrogen on the phase composition and physical and mechanical properties of stainless austenitic-pearlitic steels

  • Stainless Steels
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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Being an austenite-forming element, nitrogen (up to 0.36%) hardens austenite into austenitic-ferritic steels, but significantly reduces the amount of ferrite — from 65 to 35%. The overall effect of this influence of nitrogen is to reduce the strength properties of the steels under investigation.

  2. 2.

    A reduction in the amount of α-phase in the structure of dual-phase steels with the introduction of nitrogen is accompanied by pronounced enrichment of the ferrite with ferrite-forming elements, primarily with chromium and molybdenum, and its impoverishment with austenite-forming elements. This contributes to the formation of σ-phase, which leads to embrittlement of the steel.

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Authors
  1. G. G. Kolchin
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  2. N. V. Korolev
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  3. B. S. Ermakov
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Additional information

Leningrad Technological Institute of the Refrigeration Industry. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 35–38, April, 1986.

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Kolchin, G.G., Korolev, N.V. & Ermakov, B.S. Effect of nitrogen on the phase composition and physical and mechanical properties of stainless austenitic-pearlitic steels. Met Sci Heat Treat 28, 272–276 (1986). https://doi.org/10.1007/BF00707655

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  • DOI: https://doi.org/10.1007/BF00707655

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