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Influence of boron on the structure and properties of hard-facing alloys

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  1. 1.

    In wear-resistant facings boron dissolves in chromium carbide, forming compounds with chromium and iron (borides) distributed in the eutectic.

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    The brittle and hard borides increase the hardness and brittleness of the alloy, which explains the embrittlement of facings when boron is added.

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    Facings working under severe impact loading conditions should contain no more than 0.2% B (for facings with no more than 20% Cr and no more than 1.6%C). Up to 0.6–0.8% B can be added to facings working under abrasive wear conditions without impact loading.

With the addition of strong austenitizing elements (nickel, manganese), which ensure 30–40% austenite in the alloy, the amount of boron can be increased to 0.6–0.7% with a carbon concentration no higher than 1.4%, producing a higher wear resistance with some moderation of the impact resistance.

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Literature cited

  1. 1.

    Review of foreign work, Stal', No.3 (1959).

  2. 2.

    N.A. Grinberg and E.G. Kurkumelly, Avtomaticheskaya svarka, No.3 (1966).

  3. 3.

    N.A. Grinberg and L.S. Livshits, Avtomaticheskaya svarka, No. 7 (1962).

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Additional information

VNIIST. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 67–70, June, 1967.

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Livshits, L.S., Shcherbakova, V.S. & Grinberg, N.A. Influence of boron on the structure and properties of hard-facing alloys. Met Sci Heat Treat 9, 467–469 (1967). https://doi.org/10.1007/BF00657598

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  • Carbide
  • Chromium
  • Manganese
  • Austenite
  • Boron