Finite-element modelling was used to investigate the effect of anisotropy, in grains, upon the dislocation density during tensile deformation. Deformation within several grains was considered. Differing anisotropic elastic moduli, yield strengths and active slip systems were taken into account for each grain. The dislocation density was determined indirectly by simulating the distribution of the elastic strains after unloading. Such a distribution was found to be similar to the occurrence of mosaic blocks, and was affected by the grain size, and by changes in local anisotropic yield strength and in the local active slip system within each grain.

Finite Element Modelling of the Influence of Anisotropic Material Properties on Dislocations in Metals H.Feng, M.N.Bassim: Materials Science and Engineering A, 1998, 251, 94-9