Molecular dynamics simulation reveals increased hardness and dislocation hindrance from graphene layers in copper composites, highlighting mechanical strengthening mechanisms.
Key Points
Indentation force and composite hardness decrease significantly as graphene moves further below the contact surface, whereas additional graphene layers enhance structural strength.
Dislocations in the copper matrix require higher stress to release toward the surface as graphene layers increase, forcing additional crystalline slip and defect generation.
Molecular dynamics simulations assess deformation mechanisms and load responses in cu/graphene composites under nanoindentation, highlighting dislocation blockage for nanomaterial design.