Mechanical and material characterization of reinforced Al-7075 MMC/Hybrid composites. A critical review

Currently, nearly every industry on the planet uses composites rather than ferrous based alloys to create low-weight mechanical components and elements without sacrificing the material's inherent qualities. Because of its “corrosion resistance,” “low weight,” “low density,” and “high strength,” aluminium is the best material to replace conventional materials with AMM composites, or aluminium metal matrix composites, are a popular choice for a variety of engineering applications because they can meet the necessary demand. Addition of reinforcement fillers such as TiC, SiC, B4C, Stainless steel, Fe, Oxides, Tungsten Carbide, Nitrides, Molybdenum Disulphide, graphite, fly ash, red mud, and agro waste powders such as rice husk ash (RHA), coconut shell ash (CSA), palm kernel shell ash (PKSA), maize stalk ash, bagasse ash, bamboo leaf ash, corn cob ash, ben shell waste ash, egg shell ash, aloe-Vera powder, snail shell ash etc., can be added to the aluminium matrix material to achieve the specific/desired properties. To improve the “metallurgical and mechanical” qualities of the composite by altering its texture and surface, numerous researchers examined the impact of adding reinforcing elements to the aluminium matrix. The goal of the current review article is to examine the stir casting method used to create hybrid composites and metal matrix based on Al-7075 with the addition of the aforementioned reinforcement particles. It also aims to investigate how the accumulation of these composites to the Al-7075 matrix has improved the composites properties, such as its wear and corrosion resistance, hardness, impact strength, and compressive strength, while also reducing its density. This study examines the impact of different types, sizes, and shapes of reinforcing materials on the mechanical and physical characteristics of Al-7075 based metal matrix composites, as well as the potential causes of changes in these features.