A brief review on effect of accumulative roll bonding routes on microstructure and mechanical properties of nanostructure alloys and nanocomposites based on aluminum

In recent years, methods based on sever plastic deformation have been considered to improve the structure and mechanical properties of various metals, especially aluminum. Among the different methods, accumulative roll boding process is appropriate to improve the structure of metals sheet. Using this method, nanostructured aluminum alloys and aluminum nanocomposites reinforced by particles can be manufactured and simultaneously improve mechanical properties such as tensile strength and hardness. In most researches, after applying of 6 to 8 cycle of accumulative roll boding process the average of grain size reduced to less than 500 nm and the tensile strength increased to more than 2 times of the strength of the annealed aluminum. Accumulative roll boding process can be applied to different sheets in different routes, which will have a different effect on structural modification and mechanical properties. In this paper, the effect of various methods of accumulative roll boding process on microstructure and mechanical properties of aluminum alloys and aluminum based composites has been investigated.