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.
Access provided by Autonomous University of Puebla. Download to read the full chapter text
Chapter PDF
Similar content being viewed by others
References
S.F. Hassan, and M. Gupta,” Effect of particulate size of Al2O3 reinforcement on micro structure and mechanical behavior of solidification processed elemental Mg,” Alloys and Compounds, 419(2006), 84–90.
B.I. Mordlike, and T. Ebert, “Magnesium: Properties, applications, potential,” Materials Science and Engineering A, 302(2001), 37–45.
AA Faraji, and AA Asadi, “Characterization of AZ91/Alumina nancomposite produced by FSP,” Materials Science and Engineering A, 528, (2011), 2431–2044.
K.B. Nie, X. J. Wang, X.S. Hu, L. Xu, K. Wu, and M.Y. Zheng, “Microsturcture and mechanical properties of Sic nanoparticles reinforced magnesium matrix composites fabricated by ultrasonic vibration,” Materials Science and Engineering A, 528, (2011), 5278–5282.
G. Cao, H. Choi, J. Oportus, H. Konishi, and X. Li, “Study on tensile properties and microstructure of cast AZ91D/AIN nanocomposites,” Materials Science and Engineering A, 494, (2008), 127–131.
Liu Shi-ying, Gao Fei-Peng, Zhang Qiong-yuan, Zhu Xue, and Li Wen-Zhen, “Fabrication of carbon nanotubes reinforced AZ91D composites by ultrasonic processing.” The Transactions of Nonferrous Metals Society of China, 20(2010), 1222–1227.
Li. Qianqian, Andreas Viereckl, Christian A. Rottmair, and Robert F. Singer, “Improved processing of carbon nanotube/magnesium alloy composites,” Composites Science and Technology, 69, (2009), 1193–1199.
I.S. El-Mahallawi, H. Abdelkader, L. Yousef, A. Amer, J. Mayer, and A. Schwedt, “Influence of Al2O3 nano-dispersions on micro structure features and mechanical properties of cast and T6 heat-treated Al Si hypoeutectic Alloys,” Materials Science and Engineering A, 556 (2012) 76–87.
I.S. E1-Mahallawi, Y. Shash, K. Eigenfeld, T.S. Mahmoud, and M.A. ElSaeed, “Influence of nanodispersions on strength-ductility properties of semisolid cast A356 Al alloy,” Materials Science and Technology, 26(2010), 1226–1231.
K.K. Deng, K. Wu, Y. W. Wu, K. B. Nie, and M. Y. Zheng, “Effect of submicron size SiC particulates on microstructure and mechanical properties of AZ91 magnesium matrix composites,” Alloys and Compounds, 504(2010), 542–547.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 TMS (The Minerals, Metals & Materials Society)
About this chapter
Cite this chapter
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
Download citation
DOI: https://doi.org/10.1007/978-3-319-48231-6_86
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48589-8
Online ISBN: 978-3-319-48231-6
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)