Abstract
In the present research, Al6061-based composites reinforced with micron-sized B4C particles were fabricated by the combination of stir casting and post-processing via accumulative roll bonding (ARB) and aging treatment. Microstructural evolutions of processed samples were investigated using optical and scanning electron microscopy. Also, mechanical properties were studied by micro-hardness measurements and room temperature tensile testing. From obtained results, it was concluded that the as-cast composites had a lower tensile strength and elongation compared with accumulative roll-bonded counterparts. Post-processing by accumulated roll bonding decreased the deficiencies aroused during stir casting and improved particle distribution. It was observed that increasing ARB cycles decreased the particle-free zones and particle clusters.
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