Tensile and fracture behaviors of austenitic high-manganese steels subject to different hydrogen embrittlement test methods
- Tensile and fracture behaviors of austenitic high-manganese steels subject to different hydrogen embrittlement test methods
- 서진유; 심재혁; 김한진; 이상인; 이지민; 이승용; 백운봉; 남승훈; 이준호; 황병철
- Issue Date
- Materials science & engineering. A, Structural materials : properties, microstructure and processing
- VOL 766, 138367
- The hydrogen-embrittlement susceptibility of austenitic high-manganese steels according to different hydrogen-charging test methods was discussed in terms of hydrogen-embrittlement process and fracture mechanism. Ex-situ electrochemical and high-pressure thermal hydrogen-charging methods exhibited a difference in hydrogen-embrittlement susceptibility because they affect the permeability and diffusivity of hydrogen. Moreover, the in-situ high-pressure gaseous hydrogen-charging method showed the most apparent hydrogen-embrittlement susceptibility because higher triaxial stress in the necked region caused by plastic instability accelerates hydrogen charging in the specimen during tensile testing in hydrogen environment, thus leading to intergranular fracture in all regions.
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