Abstract—This study aims to compare the effect of Al2O3 nano-particle additions on the densification, mechanical and electrochemical properties of Titanium (Ti) matrix composites. The Ti and Al2O3 nano-particles were dry mixed and molded using by traditional Powder Metallurgy (PM) techniques. After the molded process, the samples were sintered at 1200ºC and 1300ºC for 60 min. under high level vacuum. Mechanical property, microstructural characterization and electrochemical property of the sintered samples were performed using tensile testing, hardness, optical, scanning electron microscopy and electrochemical corrosion experiments. All the powders, fracture surfaces of sintered samples were examined using scanning electron microscope. The sintered density of straight as well as Al2O3 nano-particles reinforced Ti matrix composites increases with the increase in sintering time. The additions of Al2O3 nano-particles improve the hardness values and corrosion behavior with the increase of sintering time.
Index Terms—Sintering, titanium composites, mechanical properties.
The authors are with Marmara University, Technology Faculty, Metall. and Mater. Eng., 34722, Istanbul, Turkey (e-mails: ogulsoy@marmara.edu.tr, semih.ozbey@marmara.edu.tr, spazarlioglu@marmara.edu.tr, magician_mc1@hotmail.com, hanifiakyurt@gmail.com).
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Cite: H. Özkan Gülsoy, Semih Özbey, Serdar Pazarlioglu, Mesut Çiftci, amd Hanifi Akyurt, "Sintering and Mechanical Properties of Titanium Composites Reinforced Nano Sized Al2O3 Particles," International Journal of Materials, Mechanics and Manufacturing vol. 4, no. 2, pp. 111-114, 2016.
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