Study on hydrogen embrittlement susceptibility of 20# pipeline steel welded joint by hydrogen-doped tensile test

Xu Wang; Xiang Chen; Jingyu He; Nianqi Chen

doi:10.1117/12.3045665

15 January 2025 Study on hydrogen embrittlement susceptibility of 20# pipeline steel welded joint by hydrogen-doped tensile test

Xu Wang, Xiang Chen, Jingyu He, Nianqi Chen

Author Affiliations +

Proceedings Volume 13513, The International Conference Optoelectronic Information and Optical Engineering (OIOE2024); 1351327 (2025) https://doi.org/10.1117/12.3045665
Event: The International Conference Optoelectronic Information and Optical Engineering (OIOE2024), 2024, Wuhan, China

Abstract

The sensitivity of 20# pipeline steel in gaseous hydrogen environment was evaluated by slow strain rate tensile experiment. The variation of hydrogen embrittlement sensitivity of 20# pipeline steel with hydrogen content was studied. The results show that the tensile strength of hydrogen embrittleness sensitivity index increases gradually, the section shrinkage rises gradually, and the dimple decreases gradually with the increase of hydrogen blending ratio (5%, 15%, 25% and 100%). 105 °C is the maximum temperature for the 20# steel hydrogen trap. The possible gas products in hydrogen embrittlement were calculated by thermodynamics.

(2025) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xu Wang, Xiang Chen, Jingyu He, and Nianqi Chen "Study on hydrogen embrittlement susceptibility of 20# pipeline steel welded joint by hydrogen-doped tensile test", Proc. SPIE 13513, The International Conference Optoelectronic Information and Optical Engineering (OIOE2024), 1351327 (15 January 2025); https://doi.org/10.1117/12.3045665

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