  A study has been performed using a crystal plasticity based finite element
method to understand the effect of various stress states and crystal
orientations with respect to loading direction for FCC single crystals in both
hydrogenated and non-hydrogenated environment. Simulations have been performed
for a variety of stress triaxilaities, Lode parmeters, crystal orientations and
hydrogen concentrations. It is observed that crystal orientation has a varied
effect on the influence hydrogen has on plastic deformation and void growth.
Hydrogen in trap distribution at various stages of the deformation process was
also found to be influenced by crystal orientation. From analyses performed, an
analytical relationship between normalised void fraction and equivalent strain
has been derived.
