Evaluation of increased local trap hydrogen concentration

Keywords

local hydrogen concentration, diffusible hydrogen, trapped hydrogen, plastic deformation.

Cite as

Hembara O. V., Chepil O. Ya., Hembara N. T., and Sapuzhak Ya. I. Evaluation of increased local trap hydrogen concentration. Physicochemical Mechanics of Materials. 2025. 61(1), 118-125.

DOI: https://doi.org/10.15407/pcmm2025.01.118

Abstract

Mathematical models of hydrogenation of low-alloy steels, enabling the assessment of increased local hydrogen concentration near defects of various types were developed. Analytical dependences were established, and computational evaluations of the local distribution of trapped hydrogen near voids of different shapes and crack-like defects on the internal surface of a pipeline made of low-alloy steel were performed, depending on the internal pressure of the hydrogen-containing environment.

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