Abstract
Al-Si10Cu2Fe and Al-Si12Cu aluminium alloy composites were fabricated by using various weight percentage of SiC and TiB2 reinforcement particles in a two-step stir-casting process to improve their corrosion resistance for use in transport, aerospace and marine industries. Morphological and microstructural analysis of the composites were carried out using field-emission scanning electron microscopy and energy dispersive X-ray spectrometry, respectively. The results indicated a homogeneous distribution of the SiC and TiB2 particles in the matrix, resulting in enhanced materials with better mechanical properties. The improvement of the tensile strength and elastic modulus for Al-Si12Cu–7%TiB2 was 73% and 15.3%, respectively, as compared with the Al-Si10Cu2Fe matrix alloy. The uniform incorporation of SiC and TiB2 microparticles increases the bonding strength with the matrix and improves the hardness. These properties are useful to improve the tribological behaviour.
Published Version
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