| Summary: | In this paper, the Al–CuO nanocomposite is prepared by the addition of 0.5 vol.% CuO and up to six accumulative roll bonding (ARB) process cycles. Furthermore, the pure aluminum sheets were processed by the ARB. A scanning electron microscope, equipped with an electron backscattered diffraction detector, was used to assess the microstructure. Also, to investigate the effect of rapid annealing on the ARB-ed sheets, aluminum, and Al–CuO composite were subjected to ARB with rapid annealing between ARB cycles. Tensile testing and microhardness testing, together with fracture surface analyses, were employed to evaluate the ARB processed specimens. The texture analysis from the ARB processed specimens demonstrated that the texture components close to S{123} <634>, Cube {001} <100>, and Brass {011} <211> were developed. Microstructure characterization results demonstrated that the mean grain size of less than 500 nm is obtainable after the 6-cycle of the ARB. As well as, the ultimate tensile strength and microhardness substantially increased by 2.5 and two times, respectively. Al–CuO composite showed higher resistance to rapid annealing. The higher resistance of the composite to rapid annealing between ARB cycles was proven in tensile strength, mean grain size, and microhardness.
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