The radiation-induced grain-boundary migration in an alloy under electron irradiation was investigated by using an atomic-resolution high-voltage electron microscope. It was observed that the morphology of a grain boundary changed, from the initial configuration to a facet-like structure, because of boundary movement during irradiation. A marked solute redistribution was produced near to the migrated boundary interface.

Atomistic Observation of Radiation-Induced Grain-Boundary Movement in Fe-Cr-Ni Alloy under Electron Irradiation. N.Sakaguchi, T.Shibayama, H.Kinoshita, H.Takahashi: Philosophical Magazine Letters, 2001, 81[10], 691-6