| A theoretical model is suggested which describes distribution of grain boundary (GB) dislocations at GBs initially containing partial (non-topological) disclinations in polycrystalline graphene and ultrafine-grained metals. Such partial disclinations at GBs are associated with experimentally observed structural irregularities of real GBs in graphene and metals. Within the suggested model, spatial distribution of GB dislocations - basic structural units of GBs - are theoretically revealed as those depending on GB misorientation parameters and characteristics (strength, spatial location) of pre-existent GB disclinations in polycrystalline graphene and ultrafine-grained metals. |
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