In this study, we successfully tailored the mechanical and tribological properties of B 4 C/6061Al composite through optimizing heat treatment parameters, with reduced overall heat treatment cycle time. For this purpose, B 4 C/6061Al composite was synthesized via powder metallurgy route followed by a series of heat treatment cycles. Experimental results revealed that heat treated B 4 C/6061Al composites, with artificial aging time from 5 to 120 min at 250°C, exhibited highest hardness values in comparison to naturally aged samples. Sample with lowest heat treatment time of 5 min showed best combination of mechanical and tribological properties, i.e. lowest wear rate, maximum hardness and reduced ductility. Further, underlying wear mechanisms were found to be oxidative and abrasive in nature. Phase analysis revealed that β ´´/ β ′ phases were the key strengthening phases resulting in modification in mechanical and tribological properties. This study suggests an efficient processing route for developing high-performance B 4 C/6061Al composites for advanced engineering applications.
Sohail et al. (Sun,) studied this question.
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