This paper presents a theoretical and experimental study of the possible occurrence of microstructure up to nanometric level through severe plastic deformations. An aluminium alloy sample was laminated, in the form of a band and it withstood 4 passes through cylinders. As a result, ultrafine grains were obtained and the hardness of the sample increased. By generating severe plastic deformation through lamination, materials with ultrafine grains can be obtained. These materials possess a high potential of coping with many advanced applications in nanomaterials.