Investigation the mechanical and microstructural propreties of copper surface composite Cu/SiO2 fabricated by friction stir processing

Friction stir processing (FSP) is a method for improvement surface. This process development for refinement of microstructure, improvement of materials mechanicals properties so production of surfsce composite. The aim of article product metal matrix composite (MMC) on surface of copper sheets by means of SiO2 refinement by friction stir processing for improve mechanical properties. In this article travel speed was fixed and56 mm/min and rotationals speed were 500, 710, 1000 rpm to sue. Optimum sample selected due to microstructure resualts and highest mechanical properties. Microstructure resualts reported by optical and scaning electron microscopical. Resualt indicating via increase rotational speed, increase size and decrase hardness. Maximum hardness related to specimen whit rotational speed 500 rpm, and 121 Hv, least size 10µm. so tensile properties statement white standard tensile test. Resualt of mechanichal surface composite were about on 218 to 227 Mpa respectively. At last wear properties of surface composite were investigated. The resualt of wear test exhibiting better wear behaviour of the developed composite.