Nondestructive observation on tensile property change of hydrogen-exposed Cr-Mo-V steel HAZ using an instrumented indentation technique

摘要

Long-term service of materials in environments of high hydrogen pressure can cause various sorts of damage such as temper embrittlement, hydrogen-assisted degradation and hydrogen attack [1-3]. The demand in the petrochemical refinery industry for superior resistance to this damage has promoted the use of V-modified Cr-Mo steels for petrochemical reactor vessels.