The Effect of Elevated Temperature Homogenization and Extrusion on the Microstructure and Mechanical Properties of Al-Mg2Si in-situ composite

An in-situ Al-based composite with Mg2Si secondary phase was subjected to heat treatment and hot extrusion processes. It was found that the homogenization treatment tremendously influences the eutectic Mg2Si phase and sharp edges of the primary particles toward slight enhancement of tensile properties. A magnificent improvement in mechanical properties was achieved after hot extrusion, which was ascribed to the changing the morphology of the primary Mg2Si particles to more round or spherical shapes, the break-up of the eutectic network, and closure of the casting defects. This signifies the industrial application of these composites in the wrought form

Keywords:

In-situ composite , Homogenization , Extrusion , Tensile properties