Paper Details

Aluminium and aluminium alloys are widely used in industries due to low density, high corrosion resistanceand thermal conductivity. However, in the engineering application aluminium alloys still have some problems such asrelatively low strength, unstable mechanical properties. The mechanical properties can be improved by addition ofceramic particles like SiC etc. to fabricate metal matrix composites (MMCs). These composites are not only light weight,but have high-strength, Stiffness and wear resistance. In this study, AA 5083 alloy Micron and Nano SiC composites havebeen fabricated by Ultrasonic assisted Stir casting. Different weight % of Micron SiC (3, 5, 8, 10 Wt %) & Nano SiC (1,2, 3 and 4 wt %) were used for synthesis of composites. Density, Elastic modulus, Tensile strength, CompressiveStrength, Elongation, Hardness for aluminum alloy micron and nano SiC composites were measured. Microstructurecharacterization of both micron and nano SiC composites were carried out. Results revealed that porosity increases withincrease the weight percentage of SiC. Al Nano SiC shows higher value of elastic modulus, tensile strength, compressivestrength than Al Micron SiC Composites. Hardness of composites increases with increase in weight percentage of SiC.SEM micrograph shows uniform distribution of SiC particles with some places agglomeration. The application ofultrasonic vibration on the composite during melting not only refined the grain microstructure of the matrix, but alsoimproved the distribution of Sub micron and nano-sized particles.

R. S. Rana, Rajesh Purohit, Sanjay Soni and S. Das, “Comparison of Mechanical Properties and Microstructure of Aluminum alloy Micron and Nano SiC Composites fabricated by Ultrasonic Vibration”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 1, Issue 12, pp. 135-146, December 2014.