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Stress-Corrosion Fracture of 12Kh18AG18Sh Steel in Chloride-Containing Media with Copper Cations

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Abstract

We studied the corrosion and corrosion-mechanical resistance of new austenitic high-nitrogen 12Kh18AG18Sh steel for the retaining rings of turbogenerators in aqueous solutions containing chlorides and copper (II) cations. A significant decrease in the corrosion resistance of this steel (P constitutes 0.52–14.50 mm/year) and in its resistance to corrosion cracking and corrosion-fatigue fracture in CuCl2 solutions was established. We also calculated the coefficients of linear parts of the kinetic diagrams of fatigue fracture of the steel under study in air with a humidity of 40% and in 22% NaCl and CuCl2 solutions.

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Authors and Affiliations

  1. Karpenko Physicomechanical Institute, Ukrainian Academy of Sciences, Lviv

    O. I. Balyts'kyi, O. O. Krokhmal'nyi & I. V. Ripei

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  1. O. I. Balyts'kyi
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  2. O. O. Krokhmal'nyi
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  3. I. V. Ripei
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Balyts'kyi, O.I., Krokhmal'nyi, O.O. & Ripei, I.V. Stress-Corrosion Fracture of 12Kh18AG18Sh Steel in Chloride-Containing Media with Copper Cations. Materials Science 39, 629–633 (2003). https://doi.org/10.1023/B:MASC.0000023501.28238.1f

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  • DOI: https://doi.org/10.1023/B:MASC.0000023501.28238.1f

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