The present investigations are a comparative study the effects of SiC and ZrSiO4 ceramic grain sizes and mixing proportions on the microstructural and slurry erosion wear characteristics of composite materials, SiC / ZrSiO4 dual reinforced particles (DRP) LM-13 alloy matrix composites were manufactured. Dual reinforced particles composites were generated by adding combinations of (9+3)wt%, (6+6) wt.%, (3+9)wt.% silicon carbide (SiC) and zircon sand (ZrSiO4) to an LM-13alloy matrix composite. LM-13 alloy composite with silicon carbide and zircon sand samples were also manufactured for comparison dual reinforcement particles on microstructural features and wear behavior in LM-13 alloy (Al–Si alloy). Silicon carbide (44-53 µm) and zircon sand (20-37 µm) particles are reinforced in the alloy by two-step stir casting method. Slurry erosion wear study reveals that the dual particle reinforcement enhances the wear resistance as compared to single particle reinforcement if mixed in a definite proportion. Study also indicate that a combination of 12 % reinforcement of zircon sand and silicon carbide particles in the ratio of 9,3wt% into the composite exhibits better micro hardness and wear resistance as compared to other combination.

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