SYNERGISTIC ACTION AMONG HYDROGEN,STRESS AND CORROSION MEDIUM ON AUSTENITIC STAINLESS STEEL

摘要

A synergistic action among hydrogen, stress and corrosion medium on austenitic stainlesssteel has been investigated. The results show that both hydrogen and stress would increase thecorrosion rate and the effects of hydrogen and stress on the corrosion rate are synergistic ratherthan simple additive. Hydrogen decreases the threshold stress and delays fracture time of stresscorrosion cracking in a boiling MgCl₂ solution by a factor of 1/5 and 10, respectively.