In this study, aluminum composite including brass particles was produced by accumulative roll bonding. Brass mesh was used as reinforcement between the aluminum sheets. First, peeling test was performed to study the effect of various parameters on the bond strength of two aluminum layers in presence of brass mesh after cold roll bonding. Then, fractured sections were examined by scanning electron and optical microscopy. The results showed that, bonding was improved by increasing the reduction of thickness and initial thickness of aluminum layers. Also pre-rolling and post-rolling annealing increased the bond strength. After roll bonding to 50% reduction in each cycle, samples were cut in half, stacked and again roll-bonded to 50% reduction in the next cycle. 3 and 6 weight percent of brass in odd cycles from 1 to 9 was provided. In order to study the effect of brass mesh on the composites properties, aluminum sheet samples were roll bonded in the absent of brass mesh in similar cycles and rolling conditions. Microstructural examinations by optical and scanning electron microscopes showed that even at high cycles, distribution of brass particles in the matrix was not uniform and areas without brass particles was observed. Discontinuity at interfaces between matrix and particles and micro-cracks at interfaces were also observed. Examination of mechanical properties was performed by strength, hardness and micro-hardness tests. Increasing tensile strengths of 60 to 170 MPa after annealing and after 9 cycles were observed, respectively. But, there was not tangible difference in the strength between 3% and 6% composites and non-composite samples. Hardness was increased from 22 to 55 Vickers after 9 cycles in 6% composite. Fractured surfaces were investigated by scanning electron microscopy; ductile fracture was evident by dimples on the surfaces. Crystallographic texture was studied in 3% composite x-ray diffraction. Appearance of Copper and Dillamore components as major components were observed in all cycles and finally showed 17×R intensities after 9 cycles. Key words: Cold roll bonding, Accumulative roll bonding, Fractured surfaces, Mechanical roperties, Texture components
