The evolution of the structure and mechanical properties of aluminum during accumulative roll bonding

Abstract

The dependence of microstructure, microhardness, and strength properties in tensile strain tests of commercially pure aluminum on strain during accumulative roll-bonding was studied. The methods of transmission electron microscopy and electron back scattered diffraction patterns analysis were used to establish that a lamellar ultrafine structure is formed in aluminum after accumulative roll bonding. The reasons for the difference in the structure and mechanical properties of the aluminum studied from the ones relevant for the aluminum deformed by equalchannel angular pressing are discussed