Mechanical Characterization of Stir Cast Al 6063 Matrix SiC Reinforced Metal Matrix Composites

Hindi, Jamaluddin and Kini, Achutha U and Sharma , S S and Gurumurthy, B M and Gowri Shankar , M C (2015) Mechanical Characterization of Stir Cast Al 6063 Matrix SiC Reinforced Metal Matrix Composites. In: 5th International Conference on Automotive, Mechanical and Materials Engineering, August 16-17, 2015, Bali (Indonesia).

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Abstract

Aluminium based metal matrix composites find varied applications in aerospace, defense, automobile, sports equipment and electronics due to their favorable properties viz. light weight, high strength and coefficient of thermal expansion. Al 6063 is a low strength castable alloy with moderate hardess and strength and finds application in truck wheels and rail road cars. The addition of refractory reinforcement generally improves the hardness, tensile strength and high temperature properties of the material. Accordingly 200-300 micron size SiC reinforced aluminium alloy composite is prepared in laboratory condition. In the present work, Al 6063-SiC composite of 2,4 & 6 wt% as reinforcement are manufactured using conventional stir casting technique. Specimens are prepared as per the international standards and tensile, hardness and impact tests are performed. Five trials are performed in each test and the average of three closer readings are taken in hardness, tensile and impact strength tests. Microstructure reveals better dispersion of reinforcement in the matrix. It was found that hardness increases with increase in wt% of SiC reinforcement. Hardness and tensile strength of 6wt% SiC composite is found to be higher than 2 & 4wt% SiC. Ductility is found to be decreasing with increase in SiC addition. Impact strength variation is marginal with the increase in wt% of SiC

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Hardness Test, Impact Test, Metal Matrix Composite, Stir Casting, Tensile Test
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 07 Sep 2015 09:00
Last Modified: 07 Sep 2015 09:00
URI: http://eprints.manipal.edu/id/eprint/143872

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