investigation of extrusion process and heat treatment on the microstructure and tensile properties of al-5sb-5cu in-situ composite

in current study the effect of extrusion process and heat treatment on the microstructure and mechanical properties of al-alsb composites was investigated. tensile testing results showed that by addition copper element, ultimate tensile strength (uts) of al-5sb-5cu composite increases dramatically from 197mpa to 381mpa. it was seen that the presence of cu on the composition of the alloy causes the formation of hard cu-rich intermetallic particles. the results also indicated that by applying hot-extrusion process and heat treatment the ultimate tensile strength and elongation of the composites increase from 197 mpa and 6% to 381 mpa and 17%, respectively.