Abstract
The aim of this study is to studding the effect of addition of alumina and fly ash with the particles size 106µm and different weight rations (2:2, 2:4, 4:2) to aluminium-magnesium-silicon alloy on microstructure, mechanical properties, corrosion resistance, and wear. The vortex technique was used to prepare the composite material. The microscopic structure was also examined using optical microscopy and mechanical tests (hardness, tensile strength, yield strength and elongation) and wear test. The results showed that the composite material the containing (2% fly ash and 4% alumina) had the highest tensile strength (119 Mpa), yield strength (76 Mpa) and hardness (89 kg \ mm2), while it has the lowest ductility (5.3%). It was also found to have the lowest wear rate (1.8* 10-6gm \ cm) and the highest corrosion resistance.
Highlights
Modern engineering applications require the development of advanced materials that provide a broad spectrum of property combinations, such as: (i) high specific strength and ductility for aerospace and automobile applications where fuel economy and enhanced engine performance become critical, (ii) low coefficients of thermal expansion (CTE) and high thermal stability for engine components that are exposed to high temperatures, (iii) superior wear resistance, high specific stiffness and satisfactory corrosion resistance in defence applications, and so forth[1,2]
It can be noticed that the addition of Al2O3 and fly ash particles has improved the metal matrix composites (MMCs)’s tensile and yield strengths alike
The expected reason is that the dispersion of Al2O3 and fly ash particles in Al-Mg-Si matrix would tend to increase structural efficiency; this behavior is agreed with the results reached by [11]
Summary
Modern engineering applications require the development of advanced materials that provide a broad spectrum of property combinations, such as: (i) high specific strength (lightweight and high strength) and ductility for aerospace and automobile applications where fuel economy and enhanced engine performance become critical, (ii) low coefficients of thermal expansion (CTE) and high thermal stability for engine components that are exposed to high temperatures, (iii) superior wear resistance, high specific stiffness and satisfactory corrosion resistance in defence applications, and so forth[1,2] Tailoring these property combinations is a great challenge if only monolithic material systems are considered. The present experimental work aims to firstly fabricate an MMC of Al 6061/Al2O3/fly ash and to investigate the mechanical properties of the composite by testing various percentages of the solid particles
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