Potential assessment of Al 7075/BN composites for lightweight applications

A comparative study on the mechanical and tribological characteristics of AA7075/h-BN and AA7075/h-BN/MoS2 hybrid nano-composites produced using stir-squeeze casting process

“…There are two fabrication methods like liquid state method (stir casting, stir-squeeze, compo casting, etc) and the solid-state method (powder metallurgy, friction-stir processing, diffusion bonding, etc) for the production of Aluminium alloy and its composites [5,[14][15][16][17][18][19]. Among these, liquid state methods are beneficial in terms of low cost, ease of production, property achievement, and effective stirring of matrix and reinforcement, which is more desirable to the materials as well as for the production industries.…”

“…Among these, liquid state methods are beneficial in terms of low cost, ease of production, property achievement, and effective stirring of matrix and reinforcement, which is more desirable to the materials as well as for the production industries. Stir-squeeze casting is one of the effective liquid state methods, which is employed in recent years for the fabrication of aluminium alloy and composites, especially in the fabrication of hybrid composites [15,18,[20][21][22]. The process parameters namely stirring time, stirring speed, melting temperature, pouring temperature, mold temperature, mold material, die temperature, squeeze pressure, time delay, and squeeze pressure duration are the most important process parameters of stir-squeeze casting (SSC) which affects the casting efficiency [15,[23][24][25][26][27][28][29].…”

“…Among the various AA, the AA7075 series has a numerous application in the aerospace and automotive industries due to high strength to weight ratio, resistance to temperature, high strength, etc. Especially, in the fabrication of pistons, connecting rods, propeller shafts, aircraft wings, engine blocks, brake disc, and many other components [1,9,11,16,18]. However, AA7075 depicts poor mechanical and tribological behavior, which limits its use in tribological applications.…”

“…Researchers are focussing on developing Hybrid Metal Matrix Composites (HMMCs) with a broad range of properties [3,18,31,[49][50][51] to enhance the surface properties of monolithic single-phase MMCs. Studies conducted earlier revealed that HMMCs could improve the properties such as elasticity, exceptional resistance to corrosion, great thermal conductivity and high toughness to volume proportion, wear resistance, hardness, etc [52].…”

Tribological performance evaluation of h-BN nanoparticle reinforced AA 7075 and as-cast AA7075 using Taguchi and genetic algorithm

“…Among these methods, the stir-squeeze casting technique under liquid-state processing, offers distinguishing features such as ease of production by controlling the process parameters at a low cost. The solidification of Al-MMCs under high squeezing pressure improves not only the grain refinement but also the wettability of the reinforcements in the molten state [31][32][33][34][35]. Al/ h-BN MMCs exhibit better bonding between the reinforcement and matrix phases and offer high strength, lightweight, hardness, resistance to friction and wear at high temperatures [25,[36][37][38].…”