Development of AA 5083 based hybrid surface composites via friction stir processing

Abstract

The demand for advanced materials with low density and high strength is always present in areas like aerospace, automotive, and military applications. Aluminum based hybrid composites are the new generation group of materials that have the prospective to satisfy the above need. In the present work, an attempt was made to develop AA 5083 reinforced with silicon carbide and titanium oxide surface composites. Number of passes, revolving speed, and welding speed were the process parameters considered and varied in three levels. Ultimate tensile strength was measured and modeling equation was developed by response surface methodology and suitability of the equation was checked by ANOVA. The model was best to predict the ultimate tensile strength of the processed workpiece and it was observed that number of passes was the dominating parameter followed by revolving speed. The ultimate tensile strength of the processed workpiece was 237Mpa with an increase of nearly 50%.