Investigation of hybrid copper surface composite synthesized via FSP

Fabrication of a copper Metal Matrix Surface Composite (MMSC) via Friction Stir Processing (FSP) is discussed in this research, wherein Titanium Dioxide (TiO2) and Alumina hybrid particles (Al2O3) were dispersed onto copper surface. TiO2 and Al2O3 blended in equal proportion were compacted onto the grooves for friction stir processing at varying volume fractions i.e. 5, 10 and 15 volume percentages. The presence of reinforcement particles were observed through scanning electron micrographs and excellent bonding with reinforcements and copper were also spotted. Mechanical properties including tensile strength and micro hardness showcased an incremental drift with the introduction of reinforcement. Fracture surface studies proved the ductile nature of the fabricated surface composites. Studies on wear properties stated that the occurrence of these hybrid particles can enhance wear resistance of substrate metal. Wear morphology of worn-out surfaces approves with the above conclusion.