The low-cycle fatigue of corrosion-resistant steels in high pressure hydrogen

Abstract

The dependences of low-cycle durability of 11 corrosion-resistant steels of the main grades on gaseous hydrogen pressure within the range of 0.1…35 MPa at 293 K have been obtained. Homogeneous austenitic steels as well as the steels with intermetallide strengthening possess the highest service ability in hydrogen. Ni–Al–Ti steels treated for maximum heat resistance have the durability in hydrogen which is proportional to the content of Ti/Al and Ti, and is also determined by the treatment conditions. Transition materials and steels with unstable austenite form a group of steels with medium sensitivity to hydrogen. The group of metals that are catasrophic embrittled in hydrogen includes high-strength martensitic-ageing and ferritic steels.