Abstract
In this study, nanocomposites based on magnesium alloy system AZ91 were fabricated by Semi-Solid Rheocasting (SSR) technique. Al2O3 (alpha) nanoparticles were added to the AZ91 alloy with different weight fractions. The results showed that Al2O3 nanoparticles could be mixed with AZ91 semi-solid slurry using mechanical stirrer technique. However, large clusters of nanoparticles were observed. SEM images also detected significant refinement the microstructural features due to the Al2O3 additives. Hardness tests showed that an addition of 2 wt. % Al2O3 nanoparticles resulted in 17% increase in the hardness. Corrosion tests indicated an improvement of 50% in corrosion resistance due to the addition of 2wt. % Al2O3 nanoparticles. Finally, mechanical dry wear tests revealed a 5% improvement in wear resistance for 2wt. % Al2O3 nanoparticles.
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© 2014 TMS (The Minerals, Metals & Materials Society)
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Mahmoud, M.G., El-Mahallawi, I.S., Rashad, R.M. (2014). Effect of Nano-Reinforcement on Properties of Cast Mg-Al Alloy AZ91. In: Alderman, M., Manuel, M.V., Hort, N., Neelameggham, N.R. (eds) Magnesium Technology 2014. Springer, Cham. https://doi.org/10.1007/978-3-319-48231-6_86
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DOI: https://doi.org/10.1007/978-3-319-48231-6_86
Publisher Name: Springer, Cham
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