SUBCRITICAL CRACK GROWTH IN HIGH-PRESSURE HYDROGEN AND HYDROGEN WITH OXYGEN IMPURITY

In this study, the effects of oxygen content on hydrogen environment-assisted cracking are studied for several pipeline and commercial steels. Characterizing the effects of low oxygen impurities in hydrogen gas on subcritical crack growth in high pressure hydrogen environments can help inform fracture mechanics-based design and evaluate if oxygen can be utilized to mitigate hydrogen effects over long timescales.
EXTENDED ABSTRACT