Experimental Investigation on Metal Matrix Nanocomposite: Aluminium Alloy 6061 and 7075 with SiC and Fly Ash

Abstract

Aluminium metal matrix nanocomposites (AMMNCs) have been recognized as a promising material with excellent structural and functional characteristics that can be suggestively personalized to satisfy industrial demands as well as design requirements for a wide range of applications, including those in defense, marine, automobiles, and aerospace. Particularly, these industries are using an increasing number of components manufactured by AMMNCs. When compared to monolithic materials, components manufactured from aluminium-based composites have better qualities such as tribological behaviors, hardness, stiffness, strength, and higher strength to weight ratio. Therefore, this article addresses the experimental investigation on aluminium-based metal matrix nanocomposites (MMNCs) with silicon carbide (SiC) and fly ash (FA) as a reinforcement material with distinct ratios. Here aluminium alloy 6061 and 7075, hereafter referred as AA6061 and AA7075, are considered as base material. The final workpieces obtained using the process of stir casting and machining are tested to compute the output response parameters like yield strength (YS), wear rate (WR), hardness, impact strength (IS), and ultimate tensile strength (UTS). In addition, the scanning electron microscopy (SEM) images also studied for examining the distribution of reinforcement material particles in base metal.

Assessment of machinability behaviour of LM24 – nano Al2O3 – gr hybrid composites through stir casting technique

“…The percentage increases in hardness due to the machining operation are 5.2, 7.36 and 5.4 for Samples 1, 2 and 3 respectively. A similar range of hardness values is noticed in experimental studies investigated by Kotteda et al [29]. The maximum hardness of Sample C: LM24 + 5 wt% nano Al 2 O 3 + 1 wt% Gr Composite is 37.5% greater than that of the pure matrix.…”

Investigation on Wear Analysis of Aluminium (Al) 7075 Alloy Reinforced with Titanium Carbide (TiC) and Graphene (Gr) Nanoparticles

“…For improving the mechanical and wear behaviour of base metal, ceramic nanoparticles (reinforcements),solid lubricants and suitable casting processes play essential role in the development of novel metal matrix nano composites by using optimal process parameters during the manufacturing process of aluminium 7075 metal matrix nano composites.Al7075 alloy is widely used in automotive and aerospace applications like shafts, keyways, worm gears, aircraft fittings, regulating valves, etc. [4].The research workformulated to study the wear characteristics of metal matrix nanocomposites Al7075 with TiC and Graphene nanoparticles reinforcements. Manufacturing of metal matrix nanocomposites is a critical issue and stir casting is a suitable technique, so the same is used for this experimentation.Developed metal matrix nanocomposites with a smaller number of defects are estimated to have improved tribological properties by adding the TiC nano particles with graphene content by weight fraction method.Using pin-on-disc equipment, we are presently focusing on the wear behaviour of developed metal matrix nanocomposites [5].…”