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Abstract

Flyash-eglass-Al6061 alloy composites having 2 wt%, 4 wt%, 6wt% and 8wt% of fly ash and 2 wt% and 6wt % of e-glass fiber were fabricated by liquid metallurgy (stir cast) method. The casted composite specimens were machined as per test standards. The specimens were tested to know the common casting defects using ultra-sonic flaw detector testing system. Some of the mechanical properties have been evaluated and compared with Al6061 alloy. Significant improvement in tensile properties, compressive strength and hardness are noticeable as the wt % of the fly ash increases. The microstructures of the composites were studied to know the dispersion of the fly ash and e-glass fiber in matrix. It has been observed that addition of fly ash significantly improves ultimate tensile strength along with compressive strength and hardness properties as compared with that of unreinforced matrix.