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- Title
Assessment of Hydrogen Embrittlement of Operated Pipe Steel Using the J-Integral Method.
- Authors
Tsyrulnyk, O. T.; Student, O. Z.; Zvirko, O. I.; Demianchuk, D. O.; Venhryniuk, O. I.
- Abstract
Fracture due to hydrogen embrittlement is a major concern for the reliability and safety of hydrogen transportation via gas pipelines. Pipe steels are characterized by high plasticity, therefore, methods of nonlinear fracture mechanics, including the J-integral method, are preferred for determining the fracture toughness. The influence of preliminary electrochemical hydrogen charging under a moderate mode on fracture toughness of API 5L X67 steel in the as-delivered and 34-year operated on the gas main pipeline conditions was studied. A methodological feature of the experiments is the use of different rates of mechanical loading of specimens with cracks. The influence of the long-term operation of steel on its resistance to brittle fracture is revealed, depending on the test conditions.
- Publication
Materials Science, 2024, Vol 59, Issue 6, p694
- ISSN
1068-820X
- Publication type
Article
- DOI
10.1007/s11003-024-00830-6