Dislocation plasticity conventionally induces textures in polycrystalline metals after a large deformation. Parallel molecular dynamics was used to simulate the plastic deformation of nanocrystalline copper to an isochoric stretch up to 100% logarithmic strain. It was found that the movements of partial dislocations that dominated the deformation process did not lead to texture formation. The grain size distribution became extremely inhomogeneous. By observing the structural evolution, it was demonstrated that grain growth assisted by partial dislocations suppressed texture formation.

Dislocation-Assisted Grain Growth in Nanocrystalline Copper under Large Deformation. X.L.Ma, W.Yang: Scripta Materialia, 2008, 59[7], 792-5