Atomistic modeling of the interaction between matrix dislocation and interfacial misfit dislocation networks in Ni-based single crystal superalloy

► Interaction between matrix dislocations and interfacial dislocation networks in Ni-based superalloy are modeled by MD. ► Some pins formed by interaction prevent matrix dislocations from cutting into the precipitate. ► The interfacial dislocation networks can absorb matrix dislocation, acting as dislocation sinks. ► The junctions and LC locks formed due to interaction can stabilize and strengthen interfacial dislocation networks. ► The matrix dislocation can bow into the precipitate in the form of FR source.