Characterization of Al-0.12Zr-0.15Ce Reinforced by Al2O3np as Composites Conductor
Published at : 29 Apr 2016
Volume : IJtech
Vol 7, No 3 (2016)
DOI : https://doi.org/10.14716/ijtech.v7i3.2866
Zulfia, A., Robby, F., Kirman, Sukarto, A., 2016. Characterization of Al-0.12Zr-0.15Ce Reinforced by Al2O3np as Composites Conductor. International Journal of Technology. Volume 7(3), pp.383-391
| Anne Zulfia | Department of Metallurgy and Materials, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia |
| Fadli Robby | Department of Metallurgy and Materials, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia |
| Kirman | Department of Metallurgy and Materials, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia |
| Agus Sukarto | Research Center for Physics. P2F LIPI, Kawasan Puspiptek, Serpong, Tangerang 15314, Indonesia |
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.
Al2O3 nanoparticles, Electrical conductivity, Master alloy Al-Zr-Ce, Stir casting, Tensile strength
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