Abstract
AbstractConsiderable attention has been given to graphene as a reinforcement material for metal matrix composite (MMC) because of its great potential for use in the automotive and aerospace industry. In general, the difficulty in achieving optimally improved properties can be attributed to poor wettability, agglomerations, and non-uniform distribution of reinforcement in the MMCs. Therefore, in terms of structural integrity, interfacial bonding, and its strengthening mechanism are important to achieve a high performance composite, which makes it imperative to discuss the integration of graphene into the alloy. The reinforcement mechanism of graphene-reinforced aluminium alloy has been evaluated in a limited number of studies, and this article examines current publications in this area. This article outlines three key topics related to the key challenges of graphene as a reinforcement material, the strengthening mechanism of graphene in a metal matrix, and the factors limiting the properties enhancement. Lastly, future works and recommendations addressed are summarized. The review presented aims to benefit to a wide range of industries and researchers and serve as a resource for future scholars.
Highlights
Considerable attention has been given to graphene as a reinforcement material for metal matrix composite (MMC) because of its great potential for use in the automotive and aerospace industry
In the case of aluminium matrix composite (AMC), the strengthening mechanism can be attributed to the following: (1) Orowan looping of nanoparticles, (2) load transfer from Al matrix to graphene, (3) dislocation strengthening through the CTE mismatch, and (4) grain refinement strengthening
The insights gained from this review highlight the significant role of understanding the strengthening mechanism in graphene AMC and the contributing factors to maximise its enhanced mechanical properties
Summary
Abstract: Considerable attention has been given to graphene as a reinforcement material for metal matrix composite (MMC) because of its great potential for use in the automotive and aerospace industry. This article outlines three key topics related to the key challenges of graphene as a reinforcement material, the strengthening mechanism of graphene in a metal matrix, and the factors limiting the properties enhancement. Graphene is a two-network carbon nanomaterial that forms a unique honeycomb lattice structure through sp hybridisation This material has excellent physical and chemical properties because it is harder than diamonds and 100 times stronger than steel with a great Young’s modulus (1 TPa), high thermal conductivity (5.3 kW·m−1·K−1), and excellent ultimate tensile strength (UTS) (130 GPa) [9].The density of graphene is estimated to be as low as 1.06 g·cm−3 [25] which makes it extremely light. This article summarises the factors that limit the properties enhancement of graphene in AMC
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