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Heat Treatment of Corrosion-Resistant Austenitic-Ferritic Steel For Immersion Pumps

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Metal Science and Heat Treatment Aims and scope

The effect of quenching modes on the structure, phase composition and hardness of austenitic-ferritic stainless steel 20Kh25N8AD3M2 is studied by optical microscopy, x-ray diffraction phase analysis and hardness measurement. Corrosion tests are conducted in a 3% aqueous solution of NaCl with the use of potentiometry and potentiodynamic analysis. Heat treatment modes improving the resistance of steel 20Kh25N8AD3M2 to general and pitting corrosion are suggested. It is shown that aluminum and titanium used to deoxidize the steel can cause pitting corrosion even after quenching.

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Authors and Affiliations

  1. Bauman Moscow State Technical University, Moscow, Russia

    R. S. Fakhurtdinov, Yu. A. Puchkov, S. D. Karpukhin & A. G. Degtyareva

  2. All-Russia Institute of Aviation Materials (VIAM), Moscow, Russia

    P. N. Medvedev

Authors
  1. R. S. Fakhurtdinov
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  2. Yu. A. Puchkov
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  3. S. D. Karpukhin
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  4. P. N. Medvedev
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  5. A. G. Degtyareva
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Correspondence to R. S. Fakhurtdinov.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 9 – 16, March, 2023

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Fakhurtdinov, R.S., Puchkov, Y.A., Karpukhin, S.D. et al. Heat Treatment of Corrosion-Resistant Austenitic-Ferritic Steel For Immersion Pumps. Met Sci Heat Treat 65, 137–144 (2023). https://doi.org/10.1007/s11041-023-00905-2

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  • DOI: https://doi.org/10.1007/s11041-023-00905-2

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