Material Characterization Study on Aluminium Metal Matrix Composites by Enhanced Stir Casting Method

Abstract

Metal Matrix Composites possesses high mechanical properties compared to unreinforced materials. Aluminium Matrix Composites (AMC) is attracted in the emerging world because of its low cost, less weight and enhanced mechanical properties. In the present study the enhancement in mechanical properties like hardness and tensile strength of AMCs by reinforcing AA 6061 matrix with silicon carbide (SiC) and boron carbide (B4C) particles are analyzed. By enhanced stir casting method aluminium matrix was reinforced with boron carbide particulates and silicon carbide particulates with the various weight percentage of 2.5 %,5% and 7.5%.The tensile strength and hardness was found to increase with the increase in wt% of the reinforcement. From the analysis it is observed that the mechanical property of B4C reinforced AMC is significantly good compared to SiC reinforced AMC.

Machining parameters influencing in electro chemical machining on AA6061 MMC

“…17 In our previous work the ductile and microhardness properties of silicon-carbide, boron-carbide-based AMCs were analysed and it was reported that both AMCs are suitable for unconventional machining. 18 The fabrication of a MMC with various ceramic particles such as Si 3 N 4 , TiB 2 , B 4 C and machining the fabricated MMC individually was analysed by many researchers. [19][20][21] Fabrication by the pressure-less infiltration process under a nitrogen gas atmosphere and the grinding of the aluminium-based MMC reinforced with SiC particles show that the physical and chemical compatibility between the SiC particles and the Al matrix is the main concern in the preparation of SiC/Al composites.…”