Abstract
Composites find an important place as new advanced materials in last decades; those especially produced with nanoparticles reinforcements, attracts researchers and a number of researches were executed on this topic. In this study, Al-base 2024 alloy composites reinforced with SiC nanoparticles were fabricated and the effects of two different coating materials were investigated. Coatings were pure Al and Cu powder with constant grain particle size. The results show that the Al coating has impacts on grain size and the interface layer between reinforcement and matrix. The mechanism of formation of interface layer between SiC nanoparticles and the Al-base 2024 matrix with reinforced with Cu coated SiC particles is quite different.
Highlights
Extensive researches have been recently focused on Al and Mg based metal matrix composites (MMC) and their production methods, and, in particular, their exclusive microstructural and mechanical properties
In order to achieve a good distribution of reinforcement particles in a cast metal matrix composite [2], stirring action must be efficient enough to disperse the particles in a homogenous way
The present study aims at fabrication of Al 2024/SiC nanocomposite with Al and Cu pure coating using stir casting method, and the effects of coating on microstructure
Summary
Extensive researches have been recently focused on Al and Mg based metal matrix composites (MMC) and their production methods, and, in particular, their exclusive microstructural and mechanical properties. Application of stir casting method for the fabrication of metal matrix composites can lead to production complex-shaped components. In order to achieve a good distribution of reinforcement particles in a cast metal matrix composite [2], stirring action must be efficient enough to disperse the particles in a homogenous way. In this method, the matrix material is melted under an inert gas atmosphere, nanoparticles, Metall. Vol 21 (2) 2015 p. 73-78 which have already been coated, are added to the melt and the stirring stage will start [1,2]
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