Investigation on Physical, Mechanical and Wear Properties of SiC Particulate Reinforced Aluminium Metal Matrix Composite

Abstract:

The paper presents the results of investigation on physical, mechanical and wear properties of SiC particulate reinforced aluminium metal matrix composite. The influence of reinforced ratios of 10, 15 and 20 wt. % of SiC_p on mechanical properties and wear characters was examined. The effect of load and sliding velocity on wear behavior of composite was studied. It was observed that increase of weight fraction of reinforcement produced better physical and mechanical properties such as density and hardness with 37 µm SiC reinforced composite inspite of increased density the hardness drops above the critical sintering temperature of 550°C due to crazing of the matrix. With increased size of SiC_p especially with higher temperature, density and hardness doesn’t supplement each other. Possible pooling/agglomeration in the case of medium and coarse sized reinforcement account for this. Wear decreases with increase in sintering temperature for 23 and 37 µm SiC_p reinforced composites where as it increases for 67 µm SiC_p reinforced composites. This could be attributed to formation of silanium compound contributing to discrete hardening of matrix. Wear tends to drop with sliding velocity being less contact between the pin and the disc but increases with normal load acting on the composite.

• Periodical: Applied Mechanics and Materials (Volume 787)
• Pages: 588-592
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.787.588
• Online since: August 2015
• Authors: Radhakrishnan Ganesh, J. Saranesh Kumar, R. Satya Prakash, K. Chandrasekaran
• Keywords: Mechanical Properties, Metal Matrix Composite, Sintering Temperature, Wear

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