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Influence of rare-earth metals on the properties of austenitic chromium-nickel steel

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Conclusions

  1. 1.

    Rare-earth metals have a substantial effect on the amount, size, and composition of nonmetallic inclusions in austenitic chromium-nickel steel, and also modify the composition and quantitative relationship between spinels and silicates.

  2. 2.

    Rare-earth metals increase the ductility of the steel in long-term tests. With increasing concentrations of rare-earth metals the time before fracture first increases sharply, reaching a maximum at 0.1%, and then decreases to the original value. The creep rate first decreases or does not change, and then increases sharply.

  3. 3.

    The scale resistance of austenitic chromium-nickel steels is increased considerably by the addition of rare-earth metals.

  4. 4.

    Rare-earth metals have no effect on the grain size of the steel or the resistance to intercrystalline corrosion.

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Literature cited

  1. 1.

    T. V. Svistunova and G. V. Éstulin, Metalloved. i Term. Obrabotka Metal., No. 10 (1961).

  2. 2.

    H. Schenk and C. Carius, Arch. Eisenhüttenw,34 (1963).

  3. 3.

    M. V. Pridantsev and G. V. Éstulin, In: Metal Science and Heat Treatment. Supplement to Stal', [in Russian], Moscow, Metallurgizdat (1959).

  4. 4.

    S. B. Maslenkov and G. V. Éstulin, Fiz. Metal. i Metallov.,13, No. 6 (1962).

  5. 5.

    T. V. Svistunova and G. V. Éstulin, Metalloved. i Term. Obrabotka Metal., No. 8 (1963).

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Additional information

NiiTYaZhMAsh, Urals Machine Plant. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 50–53, April, 1967.

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Farafonov, V.K., Shteinberg, M.M., Tret'yakova, Z.G. et al. Influence of rare-earth metals on the properties of austenitic chromium-nickel steel. Met Sci Heat Treat 9, 294–297 (1967). https://doi.org/10.1007/BF00652968

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Keywords

  • Grain Size
  • Silicate
  • Ductility
  • Creep Rate
  • Substantial Effect