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a b s t r a c t A Ti 5 Si 3 coating layer was plated on the surface of SiC P by salt-bath plating. The coating layer greatly promoted the wettability of SiC by the molten Al with the final contact angle decreasing from 94°of uncoated one to 4°at 973 K. The 2 vol.% Ti-coated SiC P /2014Al composites were fabricated by stir casting with the addition of 20 vol.% Ti-coated SiC P /2014Al master alloy. Due to the significant improvement of the wetting between the Ti-coated SiC and Al melt, the interfacial energy between Ti-coated SiC P and Al melt is significantly higher than that between α-Al and Ti-coated SiC P . Therefore, Ti-coated SiC P was more easily engulfed into α-Al grains during solidification, leading to a more homogeneous distribution of SiC P and obvious improvement of tensile property for the composites. The yield strength, ultimate tensile strength and fracture strain of the 2 vol.% Ti-coated SiC P /2014Al composites increased from 389 MPa, 525 MPa and 4.8% of the 2 vol.% uncoated SiC p /2014Al composites to 420 MPa, 576 MPa and 6.8%, respectively. The present work offers a new method to improve the dispersal uniformity of SiC P in the composites.

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