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Effect of aqueous media on the cyclic cracking resistance of steels at 300°C

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Abstract

We investigate the influence of reactor water (of the boron control system) on the fatigue crack growth rates in 15Kh2NMFA and 08Kh18N10T steels at 300°C. Corrosion-fatigue cracking is found to be typical of 15Kh2NMFA steel. The kinetics of the potentials of newly formed steel surfaces in high-temperature reactor water is studied. A phenomenological model that describes the influence of high-temperature aqueous media on the fatigue crack growth rates in steels is developed on the basis of data of corrosion-mechanical and electrochemical investigations. The results obtained by this model are in good agreement with experimental data.

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Authors
  1. I. P. Gnyp
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Karpenko Physicomechanical Institute, Ukrainian Academy of Science, L'viv. Translated from Fiziko-Khimicheskaya Mekhanika Materialov, Vol. 30, No. 1, pp. 34–42, January–February, 1994.

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Gnyp, I.P. Effect of aqueous media on the cyclic cracking resistance of steels at 300°C. Mater Sci 30, 31–37 (1995). https://doi.org/10.1007/BF00559013

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  • DOI: https://doi.org/10.1007/BF00559013

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