Microstructure and mechanical properties comparison of Cast and Extruded Al6061-SiCp composites

Abstract

Casting and Extrusion are typical mechanical processes classified as primary and secondary process respectively. Casting as a primary process is prominently used in making intricate shapes and is considerably economical. Secondary process such as extrusion is metal working technique used to produce components and objects having cross sectional profile. The present paper reports on the comparison between uncoated and Ni-P coated SiC reinforced Al6061composites produced by stir casting and hot extrusion method. Electroless plating technique was used to nickel coat SiC particles. The extent of incorporation of reinforcements was varied from 2 to 10 wt% in steps of 2wt%.SEM examinations were also carried out to observe the possible mechanisms in the matrix alloy and developed composites.