A theoretical model was proposed which described the local migration of grain boundaries near to triple junctions according to the new mechanism stimulated by the grain boundary slip. Within the framework of this model, a driving force for the local migration was attributed to the interaction between sliding and structural grain boundary dislocations responsible for the grain boundary slip and misorientation, respectively.

Local Migration of Grain Boundaries in Polycrystalline Materials under Plastic Deformation Conditions. A.L.Kolesnikova, I.A.Ovidko, A.A.Fedorov: Technical Physics Letters, 2003, 29[6], 488-90