▎ 摘　　要

A theoretical model is suggested which describes distribution of grain boundary (GB) dislocations at GBs located in subsurface areas of polycrystalline graphene and ultrafine-grained metals. Within the suggested model, spatial distribution of GB dislocations - basic structural units of GBs - are theoretically revealed as those depending on the presence of triple junction disclinations in polycrystalline graphene and ultrafine-grained metals.