Very interesting new article in which the phenomenon of hydrogen-induced intergranular failure of iron is attributed to a hydrogen-enhanced plasticity (HELP)-mediated decohesion process.
Link to the Article: S. Wang, M.L. Martin, P. Sofronis, S. Ohnuki, N. Hashimoto, I.M. Robertson, Hydrogen-induced intergranular failure of iron, Acta Materialia, Vol. 69, May 2014, pp. 275–282, DOI: 10.1016/j.actamat.2014.01.060