Fabrication And Experimental Analysis Of Mechanical Properties Of Aluminium-Silicon Carbide Composite

Abstract

Aluminium Based Composites With Silicon Carbide As Particle Reinforcement Find Their Wider Requirement In Aerospace Industries Because Of Their Excellent Mechanical And Physical Properties. The Enhanced Mechanical And Physical Properties Of The Materials Are The Direct Result Of Influence Between The Aluminium Matrix And Silicon Carbide Reinforcement. In The Present Study Aluminium (99.5%) And Sic (50 ??M) Has Been Chosen As Matrix And Reinforcement Material, Respectively. The Benefits Of Using Sic As Reinforcement Are Expected To Be Improved Stiffness, Strength, Wear Resistance, Fatigue Resistance, And Reduced Thermal Expansion. Additionally, Sic Reinforcements Are Typically Low-Cost And Are Relatively Low-Density. This Research Study Focused On The Influence Of Sic Particles Over The Improvement Of Mechanical Properties Of Aluminium Metal Matrix Composite. The Different Compositions Of Sic (0%, 2.5%, 5%, And 7.5%), Were Followed To Develop The Composite Using Stir Casting Route, While Keeping All Other Parameters Constant. The Distribution Of Sic Particulate Reinforcement In Al Metal Matrix Was Studied By Using Optical Microscope. Various Mechanical Properties Like Tensile Strength, Hardness And Compressive Strength, Were Evaluated For Three Different Composition Specimens. The Optical Micrographs Of The Al-Sic Indicate That The Sic Reinforcing Particles Were Uniformly Distributed In The Matrix Alloy. The Experimental Results Showed That The Tensile Strength, Hardness And Compression Strength Of Pure Aluminium Were Improved By 71%, 36%, And 20% Respectively. A Result Of Tensile Test Shows That, Tensile Strength Of Pure Aluminium Raised From 88.22 Mpa To 151.60mpa, When 7.5% Of Sic Was Added. Also The Result Of Hardness And Compression Tests Shows That, The Hardness And Compression Strength Of Aluminium Were Increased From 29.18 Vh To 39.74 Vh, And 348.32 Mpa To 418.24 Mpa Respectively With The Increasing In Weight Percentage Of Silicon Carbide To 7.5 Percent.