Critical role of Lüders banding in hydrogen embrittlement susceptibility of medium Mn steels. (1st January 2021) - Zhang, Jun
Abstract: The effect of Lüders banding on hydrogen embrittlement (HE) susceptibility of medium Mn steels was investigated by tuning the degree of yield point elongation (YPE). It was found that the steel with a larger YPE was more susceptible to HE. A larger YPE led to a higher local flow stress and a higher fraction of strain-induced martensite, which in turns resulted in more H-induced cracks in the Lüders banding area and the consequent catastrophic failure. It thus suggests that Lüders banding and the associated localized deformation play a key role in influencing the overall HE susceptibility of medium Mn steels. Graphical abstract: Image, graphical abstract