Abstract
The effects of repeated accumulative roll bonding (ARB) cycles on reinforcement phase features, matrix microstructure and composite tensile behavior evolution were investigated by microscopy, machine learning, tensile testing, and fracture surface observation. The results showed that with increasing ARB cycles, the reinforcement particles decohered and their distribution uniformity improved. Meanwhile, the matrix microstructure evolved and consequently, the mechanical properties of the composite were improved. However, all parameters saturated at higher ARB cycles suggesting the limitation of further cycles in strengthening composites. These findings are significant for enhancing the knowledge about the microstructure and mechanical properties of particle reinforced composite and optimizing the fabrication of composites by ARB.
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