It was noted that the configuration of dislocation-wall structures, and the interactions between dislocations and dislocation walls, played an important role in understanding the deformation processes of metals. Samples of single-crystal Al were deformed by tensile-straining (15%) and were analyzed by using transmission electron microscopy. In tensile-deformed (15%) single crystals, a cell structure was well-developed and dislocations in the cell boundaries consisted of either one set of Burgers vectors or two sets of Burgers vectors. The 3-dimensional image of the cell-wall structure, the misorientation angle across the cell boundaries and the Burgers vectors of dislocations in the cell boundaries were characterized.

Microstructure Characterization of Dislocation Wall Structure in Aluminium using Transmission Electron Microscopy. J.Gan, J.S.Vetrano, M.A.Khaleel: Journal of Engineering Materials and Technology, 2002, 124[3], 297-301