International Journal of Advanced Materials Research
Articles Information
International Journal of Advanced Materials Research, Vol.1, No.2, May 2015, Pub. Date: May 20, 2015
Study of Tribological Characteristics of Al-SiC Metal Matrix Composite
Pages: 53-58 Views: 1731 Downloads: 1266
Authors
[01] Shouvik Ghosh, Department of Mechanical Engineering, National Institute of Technology, Sikkim, India.
[02] Prasanta Sahoo, Department of Mechanical Engineering, Jadavpur University, Kolkata, India.
[03] Goutam Sutradhar, Department of Mechanical Engineering, Jadavpur University, Kolkata, India.
Abstract
In the present paper, the tribological characteristics (wear and friction) of Al-SiC metal matrix composite fabricated by stir casting technique are studied. The metal matrix composite is fabricated using LM6Aluminium alloy as base metal and mixed with SiC as reinforcement. The volume fraction of SiC reinforcement is varied in the range of 5-10% by volume. The tribological tests were performed in a multi tribotester using block-on-roller setup at room temperature of 280C. Block samples of 20mm x 20mm x 8mm was prepared from the casted material and tested against EN8 steel roller. A load range of 50-100 N and sliding speed range of 180-220 rpm was chosen for the purpose. Wear depth and co-efficient of friction are chosen as system responses for wear and friction study. Wear resistance increases with increase in vol% of SiC whereas co efficient of friction is higher for Al-7.5%SiC and minimum for Al-10%SiC. The micro-hardness test conducted by Vickers micro-hardness tester concluded increase in hardness with increase in volume fraction of the reinforcement. To study the wear phenomenon wear tracks were analyzed using scanning electron microscopy.
Keywords
Al-SiC, Composite, Friction, Wear, Hardness
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