Synthesis and evaluation of mechanical of AA 6063/MgO+Flyash (Al2O3) hybrid surface composite by friction stir processing
by R. Raja; Sabitha Jannet; Lenin Dallas; Aibel Sam Saju; S. Rajesh Ruban
International Journal of Materials and Product Technology (IJMPT), Vol. 64, No. 1, 2022

Abstract: Aluminium metal matrix composites are being studied extensively due to its versatility and wide applications in automobile, aircraft, and marine sectors. Surface modification is a domain that will improve the surface properties for various applications. Here, an attempt is made to fabricate AA6063MgO/(Al2O3) flyash hybrid surface composite by friction stir processing. Three different weight percentage of hybrid reinforcement was used. The process parameters used were 1,200 rpm, 20 mm/min traverse speed, and 10 KN axial load. Two passes were done to obtain better particle distribution. Cooling time was not allowed before the second pass. The mechanical properties were evaluated. There was a 9.75% increase in the ultimate tensile strength for 12% reinforcement with a 21.79% decrease in the elongation. The microhardness results showed an increase in hardness for 12% reinforcement. The SEM images obtained revealed the distribution of the reinforced particle in the matrix. It also reveals the formation of hybrid particles.

Online publication date: Tue, 11-Jan-2022

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