The Effect of Different Fly Ash and Vanadium Carbide Contents on the Various Properties of Hypereutectic Al-Si Alloys-Based Hybrid Nanocomposites

Abstract

Recently, the attention of scientists has been devoted to improving the various properties of aluminum alloys such as strength, elastic modulus, and wear and corrosion. In this respect, the preparation of hybrid nanocomposites containing two ceramic reinforcements is a promising strategy for enhancing the aformentioned properties for use in various industrial applications. Therefore, powder metallurgy technique was used to manufacture hybrid nanocomposites from Al-Si matrix reinforced with different weight percentages of vanadium carbide (VC) and fly ash (FA) particles. Then, the prepared powders' microstructure and particle size distributions were examined by SEM technique and diffraction particle size analyzer. The prepared powders were sintered in an argon atmosphere and subsequently, their physical, elastic and mechanical properties, and wear and corrosion behavior were measured. The results showed that the addition of 10 wt.% VC and 10 wt.% FA nanoparticles resulted in a decrease in Al-Si alloy particle sizes up to 47.8 nm and improved microhardness yield, strength, and Young's modulus to 161, 145 and 64%, respectively. Also, it remarkably decreased the rate of wear and corrosion to 40 and 67%, respectively.

The Effect of Incorporating Ceramic Particles with Different Morphologies on the Microstructure, Mechanical and Tribological Behavior of Hybrid TaC_ BN/AA2024 Nanocomposites

“…At a low reinforcement content, AA2024-D3, the hardness was slightly increased compared to the rolled sheets of AA2024 alloy as produced. When the content was increased to 24%, AA2024-D1, the hardness increased sharply, as shown in Figure 6a-this contribution is consistent with [42]. The improvement in hardness was 11%, 22%, and 60% for AA2024-D3, AA2024-D2, and AA2024-D1, respectively (Figure 6b).…”

Influence of Friction Stir Process on the Physical, Microstructural, Corrosive, and Electrical Properties of an Al–Mg Alloy Modified with Ti–B Additives

“…On the other hand, the addition of reinforcing agents from the ceramic phase (TiB) within Al 5052 by the FSP process improved the final US and YS according to the strengthening mechanisms. Nevertheless, a decrease followed it in L, which is consistent with much of the literature dealing with the improvement of the mechanical properties of Al alloys by the addition of different ceramics [4,5,42]. Moreover, the homogeneous distribution of TiB 2 particles in the Al alloy may obstruct the dislocation motion.…”

“…Many techniques can improve the mechanical properties of aluminum alloys. Reinforcing particles and additives are essential approaches for improving the performance of these alloys [1][2][3][4]. Modification elements such as Ti, B, and B 4 C have significantly affected the grain refinement's microstructure [5].…”

Effect of Gas Propellant Temperature on the Microstructure, Friction, and Wear Resistance of High-Pressure Cold Sprayed Zr702 Coatings on Al6061 Alloy

“…Because of this, many have sought to use coating treatment methods as they are repeatable and can greatly extend the operational lifespans (especially in wear prone environments) of Al-based components. Such methods include but are not limited to anodizing, physical vapor deposition, plasma electrolytic oxidation, powder sintering, additive laser surface treatments and chromium electroplating [9][10][11][12][13][14][15][16][17]. Through the utilization of these methods, the wear resistance of Al can be greatly improved, thus annually saving millions across a widespread of industries [18].…”