Dislocation–interface interactions were investigated in a Ni–Cu bilayer using molecular mechanics simulations. Nanoindentation model was used to generate dislocations in the top Ni layer and study their propagation through coherent (111) face-centered cubic interface into Cu. Although dislocations do propagate through, the interface acts as a strong barrier to gliding dislocations and contributes considerably to the overall strain hardening of the nanolayered material. Mechanisms of dislocation–interface interactions were analyzed. In particular, spreading of a dissociated dislocation core at the interface and interfacial stacking fault formation were investigated along with their effect on the material strengthening.

Dislocation–Interface Interaction in Nanoscale FCC Metallic Bilayers. S.Shao, S.N.Medyanik: Mechanics Research Communications, 2010, 37[3], 315-9