Effect of Accumulative Roll Bonding Process on Microstructure and Properties of AA3003 Aluminum Alloy

AA3003 aluminum alloy sheet was processed by accumulative roll bonding with four passes. The microstructure, tensile properties and formability of the aluminum alloy sheet after different-pass accumulative roll bonding were studied. The results show that with the increase of roll bonding pass, the grains in the aluminum alloy sheet were refined and tended to be equiaxed, and the homogeneity of the microstructure increased in the sheet thickness direction. The rolling texture and shear texture were dominant in the central layer and the surface layer of the accumulative roll bonded aluminum alloy sheet, respectively. The accumulative roll bonding process improved the strength of the aluminum alloy sheet, but reduced the plasticity and formability. With the increase of roll bonding pass, the yield strength and tensile strength of the aluminum alloy sheet increased, the elongation changed little and the formability decreased slightly.