Corrosion degradation of long-term operated steel sewage pipes

Keywords

corrosion, stress, crystallinity, deformation, microhardness, structure.

Cite as

Мakarenko V. D., Stogniy О. V., Gots V. І., Maksymov S. Yu., and Маkarenko Yu. V. Corrosion degradation of long-term operated steel sewage pipes. Physicochemical Mechanics of Materials. 2023. 59(5), 18-23.

https://doi.org/10.15407/pcmm2023.05.018

Abstract

The results of the experimental study of the degradation of steel structures of sewer underground constructions are presented. The distribution of harmful gas elements (sulfur, hydrogen, oxygen) over the wall thickness of sewer pipes along corrosion defects in the form of pits, as well as the character of changes in the microhardness of the metal depending on the hydrogen content and service life, are shown. To confirm the metal softening with increasing hydrogen concentration, the stresses of the crystal lattice (distortion stresses) were measured.

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