Tribological Behavior of Al/Nanomagnesium/Aluminum Nitride Composite Synthesized through Liquid Metallurgy Technique

Abstract

Despite its excellent qualities such as hardness, tensile, and yield strength, aluminum alloys are mostly used in aviation fins and car frames. However, wear resistance at maximum load is weak. This effort will now synthesize and investigate the tribological behavior of AA6063- (AlMg0.7Si-) AlN composites. The goal of this experiment is to determine the best wear rate and coefficient of friction for the AA6063-AlN with nanomagnesium composites developed. Weight percent, load (L), sliding velocity (SV), and sliding distance (SD) are the process factors studied, and the output responses are wear rate and friction coefficient. Bottom pouring type stir casting was used to create AA6063-AlN composites with various weight percentages. The various compositions are AA6063, AA6063-4 wt% AlN, AA6063-8 wt% AlN, and AA6063-12 wt% AlN. A pin-on-disc machine inspected the wear rate and friction coefficient of AA6063-AlN composites. Experimentation was done according to L16 orthogonal array (OA). Wear rate (WR) and coefficient of friction (COF) examinations were made to identify the optimum parameters to obtain minimum WR and COF for the AA6063-AlN composite via grey relational analysis (GRA). The contour plot analysis clear displays WR and COF with respect to wt% vs. L, wt% vs. SV and wt% vs. SD. The ANOVA outcomes revealed that wt% is the most vital parameter (85.55%) persuading WR and COF. The optimized parameters to achieve minor WR and COF was found as 12 wt% of AlN, L 20 N, SV 3 m/s, and SD 400 m. The worn surface was analyzed using scanning electron microscope and indicates that addition of AlN particles with matrix reduces the scratches. These articles offer a key for optimum parameters on wear rate and COF of AA6063-AlN composites via Taguchi grey relational analysis.

Tribological Behavior of AA7075 Reinforced with Ag and ZrO2 Composites

“…It is possible to manufacture composite materials using either a solid-state approach or a liquid-state method. e solid-state approach is the more expensive of the two options, thus it is not suggested for large-scale production [9][10][11]. To put it another way, the liquid-state method has a lower production cost than the solid-state method and is very practicable and assures a proper distribution of strengthening in the matrix material [12,13].…”

The Effects of Titanium Dioxide (TiO2) Content on the Dry Sliding Behaviour of AA2024 Aluminium Composite

“…Additionally, Figure 7 shows that the grooves are lower and wider in the matrix as compared to the composites tested under similar conditions. Figure 14(d) demonstrates the ploughing on the worn-out surface of the 7. wt.% of TiO 2 composite, which may be due to the sliding of oxide particles in the composite [34]. The wear rate of the rheoformed composite components reduced insignificantly when the volume fraction of TiO 2 nanoparticles reached 7.5% compared to those with 5% TiO 2 nanoparticles.…”

“…After ageing scratches along the sliding direction (Figure 13(c)) that were observed on the surface (Figure 13(a)), and abrasive wear became adhesive wear. Due to a larger number of TiO 2 nanoparticles in the matrix base, its plastic deformation was countered by a mechanically mixed layer that became a barrier to the moment of dislocation and increased wear resistance [34]- [35]. The weight loss and wear tracks of the AA2024 matrix material following heat treatment are depicted in Figure 14.…”

Effect of ZrB2 Particles on Machining Parameters of AA7475 Alloy-Based Composites by Optimization Technique

“…Aeronautics and other industries have greatly benefted from particle-reinforced metal matrix composites (PRMMC), a new family of materials with improved features such as a greater ratio of mass to strength, a greater elastic modulus, and better resistance to wear and tear [1][2][3]. Tere are two ways to make PRMMCs, ex situ and in situ.…”