Optimization and Mechanical Properties of TiO2 Reinforced AA 7150 Composites Using Response Surface Methodology

Abstract

e goal of this research is to increase the performance of AA 7150 reinforced with TiO2 microparticles by optimizing the stir casting parameters. e response surface method’s central composite design technique was used to optimize the three stir casting factors of stirring temperature (A), stirring speed (B), and stirring time (C). e ultimate tensile strength, hardness, impact strength, elastic modulus, and compressive strength were all tested. With the aid of analysis of variance, it was discovered that it had a substantial in uence on the test samples’ characteristics responses. 5 quadratic experiments were linked using factors’ characteristics. At a level of 95% con dence, the models were found to be statistically important, and the variations were found to be less than 5%. e response surface was used to assess the parameter interaction pro le. Each interaction’s contour plots provided a range of stirring settings within which each property may be maximized.