Tensile and fracture behaviour of aluminium MMCs with ceramic particles – a review

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In recent years, aluminium metal matrix composites (AMMCs) reinforced with ceramic particles have attracted momentous interest owing to their improved mechanical properties, including tensile behaviour. This comprehensive review aims to provide an in-depth examination of the tensile and fracture behaviour of AMMCs with ceramic particles, along with the effects of processing techniques, including stir casting, powder metallurgy, and additive manufacturing. A pragmatic and systematic analysis of existing literature discloses that the inclusion of ceramic particles, including SiC, Al2O3, and B4C, can significantly enhance the tensile behaviour of aluminium alloys. Reduced ductility and toughness are the demerits of AMMCs fracture behaviours as discussed in the study. Emphasis was placed on the essence of good interfacial bonding, particle distribution, and matrix properties for maximal mechanical performance of Al alloys. The influence of fabrication methods, particle size, distribution, and volume fraction on the tensile and fracture behaviour of AMMCs are also highlighted. The need for novel technologies to ensure enhanced strength-toughness balance is part of the future trends and research gaps recommended with in-situ hybrid reinforcement inclusion. The study critically assessed the current state of knowledge and points out some areas for future research for tensile and fracture toughness optimisation.