It was noted that, during the plastic deformation of face-centered cubic materials, the dislocation density did not evolve uniformly, but a dislocation cell/wall structure was formed. X-ray diffraction reciprocal space-mapping was used to investigate this sub-structure within a single grain in a large-grained aluminium polycrystal. A simple dislocation cell/wall model, capable of computing numerical reciprocal space-maps, was presented. The model captured qualitatively the experimentally observed features.

Synchrotron Based Reciprocal Space Mapping and Dislocation Substructure Analysis. F.Hofmann, X.Song, S.Eve, S.P.Collins, A.M.Korsunsky: Materials Letters, 2009, 63[12], 1077-81