ABSTRACT Al2O3-ZrO2 with a high level of hardness and toughness is known as ceramic steel. Due to its unique properties it can be used as a reinforcement in fabrication of metal matrix composites. In this study, nanoparticles of Al2O3-10% ZrO2 with an average size of 80 nm were used to fabricate Al matrix composites containing 0.5, 1, 1.5 and 2 wt.% of the reinforcement. The fabrication route was stir casting at 850?C. There is no report about usage of this reinforcement in fabrication of composites in the literature. The microstructures of the as-cast composites were studied by scanning electron microscope (SEM). Density measurement, hardness and tensile properties were carried out to identify the mechanical properties of the composites. The results revealed that with increasing the reinforcement content, density decreased while yield, ultimate tensile strength and compressive strength increased. Also, hardness increased by increasing the reinforcement content up to 1 wt.% Al2O3-10% ZrO2 but it decreased in the samples containing higher amounts of reinforcement.
Cite this paper
nullM. Hajizamani and H. Baharvandi, "Fabrication and Studying the Mechanical Properties of A356 Alloy Reinforced with Al2O3-10% Vol. ZrO2 Nano-particles through Stir Casting," Advances in Materials Physics and Chemistry, Vol. 1 No. 2, 2011, pp. 26-30. doi: 10.4236/ampc.2011.12005.
 D. J. Lloyd, “Particulate Reinforced Aluminium and Magnesium Matrix Composites,” International Materials Review, Vol. 39, 1994, pp. 1-23.
J. W. Kaczmar, K. Pietrzak, and W. Wlosinski, “The Production and Application of Metal Matrix Composite Materials,” Journal of Materilas Processing Technology, Vol. 106, 2000, pp. 58-67.
T. R. Chapman, D. E. Niesz, R. T. Fox and T. Fawcett, “Wear-Resistant Aluminum-Boron-Carbide Cermets for Automotive Brake Applications,” Wear, Vol. 236, No. 1-2, 1999, pp. 81-87.
K. M. Shorowordi, T. Laoui, A. S. M. A. Haseeb, J. P. Celis and L. Froyen, “Microstructure and Interface Cha-racteristics of B4C, SiC and Al2O3 Reinforced Al Matrix Composites: A Comparative Study,” Journal of Materials Processing Technology, Vol. 142, 2003, pp.738-743.
G. Fu, L. Jiang, J. Liu and Y. Wang, “Fabrication and Properties of Al Matrix Composites Strengthened by In-situ Aluminum Particulates,” Journal of University of Science and Technology Beijing, Vol. 13, No. 3, 2006, pp. 263-266. doi:10.1016/S1005-8850(06)60055-8
A. Mazahery, H. Abdizadeh and H. R. Baharvandi, “De-velopment of Highperformance A356/Nano-Al2O3 Com-posites,” Materials Science and Engineering A, Vol. 518, No. 1-2, pp. 61-64. doi:10.1016/j.msea.2009.04.014
J. B. Fogagnolo, M. H. Robert and J. M. Torralba, “Me-chanically Alloyed AlN Particlereinforced Al-6061 Matrix Composites: Powder Processing, Consolidation and Mechanical Strength and Hardness of the As-Extruded Materials,” Materials Science and Engineering A, Vol. 426, No. 1-2, 2006, pp. 85-94.
Y. Q. Liu, H. T. Cong, W. Wang, C. H. Sun and H. M. Cheng, “AlN Nanoparticle-Reinforced Nanocrystalline Al Matrix Composites: Fabrication and Mechanical Properties,” Materials Science and Engineering A, Vol. 505, No. 1-2, 2009, pp. 151-156.
H. Zhang, K. T. Ramesh and E. S. C. Chin, “High Strain Rate Response of Aluminum 6092/B4C Composites,” Materials Science and Engineering A, Vol. 384, No. 1-2, 2004, pp. 26-34.
S. Oh, J. A. Cornie and K. C. Russel, “Wetting of Ceramic Particulates with Liquid Aluminium Alloys. Part II. Study of Wettability,” Metalls Transactions A, Vol. 20, 1989, pp. 533-541.
B. P. Krishnan, M. K. Surappa and P. K. Rohatgi, “UPAL Process: A Direct Method for Producing Cast Aluminum Alloy Graphite Composites,” Journal of Materials Science, Vol. 16, 1981, pp. 1209-1216.
F. Dellanney, L. Rozen and A. Deryterre, “The Wetting of Solids by Molten Metals and Its Relation to the Prepa-ration of Metal-Matrix Composites,” Journal of Materials Science Letters, Vol. 22, 1987, pp. 1-16.
Y. Kimura, “Compatibility between Carbon Fiber and Binary Aluminum Alloys,” Journal of Materials Science, Vol. 19, 1984, pp. 3107-3114.
B. C. Pai, A. G. Kulkarni, T. A. Bhasker and N. Balasu-bramanian, “Coating Structure of Metal-Coated Car-bon-Fibers,” Journal of Materials Science, Vol. 15, No. 7, 1980, pp. 1860-1863.
J. P. Rocher, J. M. Quinisset and R. Naslain, “A New Casting Process for Carbon (or SiC Based) Fi-bre-Aluminium Matrix Low-Cost Composite Materials,” Journal of Materials Science Letters, Vol. 4, 1985, pp. 1527-1529.
J. Hashim, L. Looney and M. S. J. Hashmi, “The Atomic Arrangement in Glass,” Journal of Materilas Processing Technology, Vol. 119, 2001, pp. 324-328.
J. Hashim, L. Looney and M. S. J. Hashmi, “Metal Matrix Composites: Production by the Stir Casting Method,” Journal of Materials Processing Technology, Vol. 92-93, 1999, pp.1-7. doi:10.1016/S0924-0136(99)00118-1
X. J. Wang, X. S. Hu, K. Wu, K. K. Deng, W. M. Gan, C. Y. Wang and M. Y. Zheng, “Hot Deformation Behavior of SiCp/AZ91 Magnesium Matrix Composite Fabricated by Stir Casting,” Materials Science and Engineering A, Vol. 492, 2008, pp. 481-485.
B. Previtali, D. Pocci and C. Taccardo, “Application of Traditional Investment Casting Process to Aluminium Matrix Composites,” Composites Part A: Applied Science and Manufacturing, Vol. 39, 2008, pp. 1606-1617.
A. Daoud and M. Abo-Elkhar, “Influence of Al2O3 or ZrO2 Particulate Addition on the Microstructure Aspects of AlNi and AlSi Alloys,” Journal of Materilas Processing Technology, Vol. 120, 2002, pp. 296-302.
U. Cocen and K. Onel, “Ductility and Strength of Ex-truded SiCp/Aluminium-Alloy Composites,” Composites Science and Technology, Vol. 62, 2002, pp. 275-282.
A. Pakdel and H. Farhangi, “Influence of Extrusion on the Mechanical Behavior of AA6061/SiC Composites,” The Arabian Journal of Science and Engineering, Vol. 34, 2009, pp. 167-174.
M. Karimi, H. R. Baharvandi, H. Abdizadeh, B. Pak Beyrami and M. A. Mobarhan Bonab, “Microstructure and Mechanical Properties of Al-Nano ZrO2 Composites Produced by Casting Route,” Proceedings of International Conference on Smart Materials and Nanotechnology in Engineering, Harbin, 1 July 2007, Vol. 6423, pp. 64235Y-1 to 64235Y-7.