Atomistic insights into the role of graphene sheets in CoCrNi/graphene composites

Dislocation nucleation and interactions at the metal/graphene (Gr) interface are crucial for understanding metal/Gr composites, especially in multi-principal element alloys (MPEAs), where unique compositional complexity adds further intricacies. This study uses atomic simulations to investigate interfacial characteristics and dislocation behaviors in CoCrNi/Gr composites. We identify six stacking configurations at the equilibrium interface and analyze misfit dislocation patterns, showing how lattice distortion and short-range order (SRO) influence interface structure. For dislocation nucleation, a high Schmid factor is necessary but not solely sufficient to determine the preferred slip system. Additional…

• NN
  National Natural Science Foundation of China

  Award: 52175188
• TU
  Technische Universität Wien
• ÖF
  Österreichische Forschungsförderungsgesellschaft
• ST
  Science Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China

  Award: 906860
• NP
  National Postdoctoral Program for Innovative Talents

  Award: GZC20242248
• BA
  Basic and Applied Basic Research Foundation of Guangdong Province

  Award: 2024A1515012378