Comparative study of hydrogen embrittlement of three heat-resistant Cr-Mo steels subjected to electrochemical and gaseous hydrogen charging
- Comparative study of hydrogen embrittlement of three heat-resistant Cr-Mo steels subjected to electrochemical and gaseous hydrogen charging
- 서진유; 유일; 이지민; 임현석; 이진희; 황병철
- Issue Date
- Metallurgical and materials transactions. A, Physical metallurgy and materials science
- VOL 51A-2125
- Hydrogen embrittlement (HE) behaviors of low carbon steel and three heat-resistant Cr-Mo steels having different Cr contents were compared through tensile testing, silver decoration, and blistering observation after electrochemical hydrogen charging and hardness testing after gaseous hydrogen charging. It was observed that higher Cr content caused a longer suppression in charging hydrogen into the steels. However, under hydrogen supersaturation conditions, the higher the strength of the heat-resistant steels, the poorer the HE resistance after electrochemical charging. In contrast, the higher the Cr content, the better the HE resistance under hightemperature gaseous charging conditions.
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