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E. L. Alekseeva, A. K. Belyaev, A. S. Zegzhda, A. M. Polyanskiy, V. A. Polyanskiy, K. P. Frolova, Yu. A. Yakovlev

BOUNDARY LAYER INFLUENCE ON THE DISTRIBUTION OF HYDROGEN CONCENTRATIONS DURING HYDROGEN-INDUCED CRACKING TEST OF STEELS

Hydrogen saturation is a recognized and standardized method for testing the propensity to hydrogen-induced cracking and corrosion resistance of metals. Hydrogen saturation in a neutral salt solution simulating seawater and groundwater during the bubbling of the solution with hydrogen sulfide, as well as in the electrolyte by the cathodic current of hydrogen ions, are the main industrial test procedures. These tests are necessary for steels used, for example, in gas and oil pipelines. In this paper, we explain results of investigation of hydrogen concentration distribution after such testing.

The method of direct measurements has revealed a significant heterogeneity of hydrogen concentrations. This observation leads to concern about the suitability of industrial testing methods for real operation conditions for construction components in an aggressive environment.

Acknowledgements: The study was supported by RFBR, projects 17-08-00783, 18-08-00201 and 18-31-00329.

Keywords: hydrogen saturation, hydrogen induced cracking, steels testing
   

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Founder:  Institute of Engineering Science, Russian Academy of Sciences (Ural Branch)
Chief Editor:  S.V. Smirnov
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