Performance Evaluation and Multidoped Composite Conditioned of A5-type/10%Ti-Sn Alloy: Processing and Properties
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TECHNICAL ARTICLE—PEER-REVIEWED
Performance Evaluation and Multidoped Composite Conditioned of A5-type/10%Ti-Sn Alloy: Processing and Properties O. S. I. Fayomi . A. P. I. Popoola . F. Oyawale . O. O. Ajayi
Submitted: 25 September 2015 ASM International 2016
Abstract The need to improve the mechanical and electrochemical performance of aluminum alloy for extended application is the motivation behind this present work which is the inoculation of TiO2/SnO2 composite particulates on A500 by stir casting route. The effect of Ti/Sn on A500 aluminum series on the properties and microstructure of the produced alloy were investigated. The TiO2/SnO2 was varied from 5 to 10 wt.%. The microstructural properties of these sequence alloys were investigated using scanning electron microscopy coupled with energy dispersive spectroscopy, and X-ray diffraction. The corrosion degradation properties in 3.65% NaCl solution were studied using linear potentiodynamic polarization technique. The wear and hardness of the composite-induced aluminum alloy were measured with dry abrasive MTR-300 testers and high diamond microhardness tester, respectively. The results showed that the average hardness value of 42.56 and 65.5 HV and wear loss of 1.5 and 0.5 g were obtained for the 0% and 10 wt.% TiO2/SnO2 in A500 series. Hence, the addition of TiO2SnO2 led to the precipitation and modification of complex intermetallic particles like Al2SnTiO and AlSiSn which also indicate a fairly good interfacial interaction. This outcome has established that up to 10 wt.% particulate on A500 aluminum can be used in enhancing the tribology,
O. S. I. Fayomi (&) F. Oyawale O. O. Ajayi Department of Mechanical Engineering, Covenant University, P.M.B 1023, Ota, Ogun State, Nigeria e-mail: [email protected]; [email protected]; [email protected] O. S. I. Fayomi A. P. I. Popoola Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, P.M.B. X680, Pretoria, South Africa
microhardness, and corrosion mitigation of aluminum alloy. Keywords A5-type/Ti-Sn Stir casting Mechanical properties Microstructure
Introduction The engineering role of aluminum to national growth and development both for industries and domestics are enormous. The widespread usage in various industrial capacities such as construction, automotive, and aircraft industries has made it suitable in recent time [1–8]. The demand has also been attested to be over twenty million of new aluminum products with no variance in superiority between virgin and reprocessed aluminum [1, 4–7]. Although they are softer in nature, possesses ductile behavior, with high electrical conductivity, and suitable corrosion resistant. The demand for higher strength, high corrosion resistance, and formability for ever-growing applications necessitate particle infringement [9–16]. In other words, extended and advantageous behavior for Al can be obtained with incorporation of particles by liquid stir cast method. Particle infringement into liqui
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