Development of Materials Testing Equipment in High-Pressure Hydrogen at Cryogenic Temperatures and Effect of Temperature on Hydrogen Environment Embrittlment of Steels

摘要

The new materials testing equipment for hydrogen environment embrittlment (HEE) in high-pressure hydrogen up to 10 MPa at cryogenic temperatures was developed. HEE fo the type 304, type 304L, type 316L and Fe-30Cr alloy to be used for hydrogen energy service was examined using the equipment at low temperatures. HEE of the steels increased with decreasing the temperature from room temperature to 220 K, reached the maximum at 220 K and decreased with decreasing the temperature. Effect of the strain-induced martensite of HEE of the austenitic stainless steels was discussed.