Vol 7, No 3 (2016) > Metalurgy and Material Engineering >

Characterization of Al-0.12Zr-0.15Ce Reinforced by Al2O3np as Composites Conductor

Anne Zulfia, Fadli Robby, Kirman Kirman, Agus Sukarto


Abstract: Aluminum, as a conductor
material, has long been used for high-voltage overhead
transmission lines due to its economic value and high electrical
conductivity. By adding Al2O3np and alloying elements
such as zirconium (Zr), cerium (Ce), and magnesium (Mg), aluminum’s strength
and performance could be improved without compromising too much of its
electrical conductivity. The focus of this research was to investigate the mechanical, electrical
properties, and microstructure of Al-0.12%Zr-0.15%Ce-5%Mg, reinforced with
different volume fractions (from 0.5 to 1.5%) of Al2O3
nano particles, using the
stir casting method. The tensile strength of the composite was improved by up
to 1.2 vf-% in alumina, and decreased with further addition
due to clustering and pores, while elongation was reduced with when increasing
the reinforcement. It was found that the electrical conductivity of the
composite generally decreased with the addition of reinforcement. The
microstructure observations showed that the composites yielded finer grains and
more pores than the unreinforced alloy, with 1.2vf-% of reinforcement having the finest grain. The
electrical conductivity of the composite was 44% IACS, which is still lower
than that of the unreinforced alloy.
Keywords: Al2O3 nanoparticles; Electrical conductivity; Master alloy Al-Zr-Ce; Stir casting; Tensile strength

Full PDF Download


Adams, B.L., 2004. ASM Handboook Vol. 9: Metallography and Microstructures. ASM International publisher, USA

Casati, R., Vedani, M., 2004. Metal Matrix Composites Reinforced by Nano-particles - A Review. Metals, Volume 4, pp. 65-83

Eugene, W.G., 1989. Aluminum Electric Conductor Handbook Third Edition, Vol. 3. Aluminum Association Publication

Gunawan, 2000. Effect of Zirconium and Lanthanum Addition on Electrical Conductivity and Heat Resistance of Aluminum Conductor Wire. Master Thesis, Material Science, Universitas Indonesia

Horikoshi, T., Kuroda, H., Shimizu, M., Aoyama, S., 2006. Development of Aluminum Alloy Conductor with High Electrical Conductivity and Controlled Tensile Strength and Elongation. Hitachi Cable Review, Volume 25, pp. 18-21

Jasmi, H., 1999. The Production of Metal Matrix Composites using the Stir Casting Technique in Mechanical and Manufacturing Engineering, Thesis, Dublin City University, Ireland

Kirman, M, Panji, M., Zulfia, A., 2014. Characteristics of AlZrCe-Al2O3 Nanocomposites Produced by Stir Casting Method as an Alternative Material for Electrical Applications. Advanced Science Letters, Volume 20, pp. 2271-2274

Kirman, M., 2015. Fabrication and Characterisation of Metal Matrix Composites AlZrCe Reinforced by Al2O3(np) through Stir Casting Route. Ph.D. Thesis, Department of Metallurgy and Materials, Faculty of Engineering, Universitas Indonesia

Li, P., Wu, Z., Wan, Y., 2006. Effect of Cerium on Mechanical Performance and Electrical Conductivity of Aluminium Rod for Electrical Purpose. Journal of Rare Earths, Volume 24, pp. 355-357

Mazahery, A., Abdizadeh, H., Baharvandi, H.R., 2009. Development of High Performance A356/Nano-Al2O3 Composites. Mat. Sci. Eng A, Volume 518, pp. 61-64

Mrówka, G., Nowotnik, J.S, Wierzbiñska, M., 2007. Intermetallic Phase Particles in 6082 Aluminium Alloy. Materials Science and Engineering, Volume 28, pp. 69-76

Paul Springer, P.D.C., 2006. Al-Zr Alloy Strand for ACCR Conductor Experimental Measurement of Resistance Temperature Coefficient. National Electric Energy Testing, Research & Applications Center

Rajkovic, V., Bozic, D., Jovanovic, M.T., 2008. Properties of Copper Matrix Reinforced with Nano- and Micro-Sized Al2O3 Particles. Journal of Alloys and Comp. Volume 459, pp. 177-184

Sajjadi, S.A, Behad, N., Mohammad, R.T., 2011. Reinforcement of Microstructure and Improvement of Mechanical Properties of Al/Al2O3 Cast Composite by Accumulative Roll Bonding Process. Material Science and Engineering, Volume 528, pp. 2548-2553

Sajjadi, S.A, Ezatpour, H.R, Parizi, M.T., 2006. Comparison of Microstructure and Mechanical Properties of A356 alloy/Al2O3 Composites Fabricated by Stir and Compo- casting Processes. Materials and Design, Volume 34, pp. 106-111

Sato, K., Yamauchi, K., Hanaki, Y., Kondo, T., Yokota, M., 1981. U.S. Patent No. 4,402,763. Washington, DC: U.S. Patent and Trademark Office

Schultz, B.F., Rohatgi, P.K., 2011. Microstructure and Hardness of Al2O3 Nanoparticle Reinforced Al–Mg Composites Fabricated by Reactive Wetting and Stir Mixing. Materials Science and Engineering A, Volume 530, pp. 87-97

Surapa, M.K., 2003. Aluminium Matrix Composites: Challenges and Opportunities. Sadhana, Volume 28, Parts 1 & 2, pp. 319-334

Toshiyuki, H.K., Michiaki, S., Seigi, A., 2006. Development of Aluminum Alloy Conductor with High Electrical Conductivity and Controlled Tensile Strength and Elongation. Hitachi Cable Review No 25

Weber, L., Dorn, J., Mortensen, A., 2003. On the Electrical Conductivity of Metal Matrix Composites Containing High Volume Fractions of Non-conducting Inclusions. Acta Materialia, Volume 51, pp. 3199-3211

Yi, W.Y., Lin, G., 2007. Effect of Particle Size on the Thermal Expansion Behavior of SiCp/Al Composites. J Mater Sci, Volume 42, pp. 6433-6438

Zhou X, Zou A, Hua X., 2009. Influence of Mg and Si in the Aluminum on the Thermo-physical Properties of Pressureless Infiltrated SiCP/Al Composites. Mats. Sci. Forum, Volume 610-613, pp. 546-553