Techniques for Investigating Hydrogen-Induced Cracking of Steels With High Yield Strength

摘要: Abstract As part of a Song range study to develop grades steel with improved resistance hydrogen-induced cracking, techniques for measuring hydrogen uptake and permeability were investigated these parameters correlated cracking at different strength levels. The used studies was Ni-Cr-Mo heat treated four yield values ranging from 95 ksi 150 ksi. environment studied sulfide saturated aqueous solution 3% sodium chloride 0.5% acetic acid. technique measure consisted exposing one side specimen the electrochemically permeating opposite side. Hydrogen measured by vacuum extraction method specimens exposed various time periods. results this comparison Stowed that both apparent diffusivity de...