AA7075-ZrO2 Nanocomposites Produced by the Consecutive Solid-State Process: A Review of Characterisation and Potential Applications

Abstract

Solid-state recycling is a direct conversion method for producing metal chips, whereas the materials are plastically deformed into the final product without melting, offering lower energy consumption and metal waste. This technique was reported for fabricating aluminium-zirconium oxide (Al-ZrO2) composite and it was widely used to avoid metal chips bounding at high temperatures during the extrusion process. Aluminium alloy (AA7075) is known for its high yield strength of more than 500 MPa under optimum ageing conditions. However, AA7075 can be further reinforced by zirconium oxide nanoparticles when needed for high-performance applications. Hot extrusion is used to obtain better mechanical properties of composite materials. The equal channel angular pressing (ECAP), a severe plastic deformation technique, was recently used to produce bulk and light recycled metal chips, such as porosity-free and ultra-fine-grained aluminium nanocomposites (ANCs). Heat treatments (HT) and ECAP post hot extrusion are mostly incorporated to improve tribological and mechanical properties and aluminium nanocomposite bonding efficiency. In this review, ANCs’ fabrication by the hot extrusion technique and the effects of ZrO2 nanoparticle are duly summarised and discussed. Furthermore, this review emphasises the importance of using HT and ECAP techniques to acquire better metal alloy incorporation, such as AA7075-ZrO2. Interestingly, owing to the lightweight properties and superior performance of AA7075-ZrO2, it was reported to be suitable for fabricating many drones’ parts, military equipment, and some other promising applications.

The Effect of Solid-State Processes and Heat Treatment on the Properties of AA7075 Aluminum Waste Recycling Nanocomposite

“…Borblik et al [19] proposed that the decreases in the size of sample resulted in decreases in all characteristics of the material surface. Luce et al [20] reported the use of AFM to analyse sizes and other important characteristics for surface topography with ease in Materials 2021, 14 Borblik et al [19] proposed that the decreases in the size of sample resulted in decreases in all characteristics of the material surface. Luce et al [20] reported the use of AFM to analyse sizes and other important characteristics for surface topography with ease in Materials 2021, 14 Borblik et al [19] proposed that the decreases in the size of sample resulted in decreases in all characteristics of the material surface.…”

“…Luce et al [20] reported the use of AFM to analyse sizes and other important characteristics for surface topography with ease in Materials 2021, 14 Borblik et al [19] proposed that the decreases in the size of sample resulted in decreases in all characteristics of the material surface. Luce et al [20] reported the use of AFM to analyse sizes and other important characteristics for surface topography with ease in Materials 2021, 14 Borblik et al [19] proposed that the decreases in the size of sample resulted in decreases in all characteristics of the material surface. Luce et al [20] reported the use of AFM to analyse sizes and other important characteristics for surface topography with ease in sample preparation for nano or microscales of the magnetic thin films.…”

Assessment of open cell bio-based flexible polyurethane composites on mechanical, thermal and electrical properties for futuristic applications: An Initiative towards net-zero carbon emissions

“…The observed phenomenon can be attributed to various factors, such as a heightened rate of work hardening, the development of dislocation tangles around the particles, a consistent distribution of reinforcement, and plastic incongruity between the reinforcement and matrix [45][46][47][48]. Zirconium Oxide also improved the exural strength of composite when it is added in different wt.% into the composite [49][50][51].…”

Recycling Aluminium AA6061 Chips with Reinforced Boron Carbide (B4C) and Zirconia (ZrO2) Particles via Hot Extrusion

“…The SSR by hot extrusion resulted in high strength enhancement of the processed chips due to severe deformation induced during extrusion [6][7][8]. In addition, SSR by hot extrusion could be cost effective compared to other conventional concepts of material recovery, saving 40% of materials, 31% of energy, and 60% of labour [9,10].…”