This review paper surmised the work on Al/B₄C composite, different methods of processing, microstructure and mechanical properties of different size and quantity of B₄C with different grade of aluminum alloy. Since B₄C_phave high hardness, good chemical resistance, good nuclear properties and low density it is widely used by the researcher among all other reinforcements like TiC, SiC, Al₂O₃ in MMC. Stir casting method is simple and economical with some disadvantages like porosity, agglomeration and inter-metallic compounds. However these are minimized in powder metallurgy methods of fabrication of MMC.

High-strength-to-weight ratio materials are crucial for the automotive and aerospace sectors, driving the demand for advanced solutions. Traditional monolithic materials fall short of meeting these requirements, prompting the exploration of ceramic-based metal matrix composites. Among these, the Al/B4C composite stands out for its exceptional wear-resistant properties, attributed to its heightened hardness and shear resistance. This study investigates the wear performance of AA 7050-7.5% B4C-T6 Composite, produced via flux (K2TiF6) assisted stir casting method. The wear rate serves as the primary performance metric, evaluated using a pin-on-disc tribometer. Experimental design employs a Taguchi L9 orthogonal array, facilitating systematic analysis. Taguchi Analysis optimizes the process parameters, revealing insights into their impact on wear performance. The wear rate directly correlates with both applied load and sliding distance, indicating higher wear with increased stress and sliding duration. Additionally, the sliding speed intermittently influences the wear rate due to a Mechanical Mix Layer (MML) presence, highlighting the complex interplay of factors influencing wear behaviour. In summary, this research underscores the potential of AA 7050-7.5% B4C-T6 Composite as a promising wear-resistant material, offering valuable insights into optimizing its performance through controlled process parameters.

Chemically Collapsible Mandrel for Solid Rocket Motor Processing