Abstract
Laminated materials are popular in the transport, chemical, and oil industries. The range of products is wide: from strips and sheets to special-purpose profiles. It is necessary to develop technologies for the processing of laminated materials that allow obtaining a high level of mechanical properties. In this regard, the process of asymmetric deformation of aluminum laminated sheet composites is considered. An analysis of the regularities of the rolling process of aluminum alloys was carried out to determine the rational parameters. It would ensure the straightness of the metal exit from the deformation zone and the required gradient structure of each of constituent layers. The analysis was carried out on the basis of simulation of experiments in the Deform 2D software package. The results show that the required level of deformation gradient can be achieved in all layers of the laminated sheet composite due to correctly selected rolling parameters. A preliminary verification of the simulation results was carried out at the asymmetric rolling mill 400 of the Zhilyaev Mechanics of Gradient Nanomaterials Laboratory of Nosov Magnitogorsk State Technical University. Samples of aluminum alloys of the fifth and sixth series were used and prepared for processing according to the established technology. The advantages of asymmetric deformation over symmetric are shown. The results of hardness tests by the Brinell method are presented.
Key words: asymmetric deformation, aluminum alloy, equivalent deformation, deformation intensity, computer simulation, severe plastic deformation.