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Features of the structure and properties of high-silicon corrosion-resistant steels and their weld joints

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Conclusions

  1. 1.

    Intergranular corrosion in austenitic high-silicon steels is caused by the precipitation in tempering at the boundaries of the recrystallized grains of a dispersed phase consisting of carbides, silicides, and carbosilicides. In this case the primary silicides may serve as bases for formation of dispersed silicides and carbides.

  2. 2.

    In the austenitic-ferritic steels the formation of silicide phase in tempering occurs at the austenite-ferrite interface into the depth of the ferrite phase. In this case the intergranular corrosion resistance increases.

  3. 3.

    Stabilization of the austenitic steels with niobium also causes an increase in their intergranular corrosion resistance.

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Authors
  1. L. D. Tikhonovskaya
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  2. V. N. Lipodaev
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  3. K. A. Yushchenko
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Additional information

E. O. Paton Electric Welding Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 55–57, April, 1987.

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Tikhonovskaya, L.D., Lipodaev, V.N. & Yushchenko, K.A. Features of the structure and properties of high-silicon corrosion-resistant steels and their weld joints. Met Sci Heat Treat 29, 314–318 (1987). https://doi.org/10.1007/BF00769434

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  • DOI: https://doi.org/10.1007/BF00769434

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