The effects of H on the dissociation of a screw dislocation in Ni were examined by atomistic simulations using the embedded-atom method potential. The simulations provide clear evidence that H atoms homogeneously distributed in the slip plane could increase the separation between partial dislocations and thus induce slip planarity.

Atomistic Simulations of Hydrogen Effect on Dissociation of Screw Dislocations in Nickel. M.Wen, S.Fukuyama, K.Yokogawa: Scripta Materialia, 2005, 52[10], 959-62