Optimizing the Microstructure of Al-Mg2Si In Situ Composite Made by Centrifugal Casting to Increase the Sliding Wear Resistance

One of the most important parts used in various industries is the pipe, whose inner surface can be exposed to wear (especially sliding wear). In this study, increasing the wear resistance of the inner surface of the Al-15 Mg2Si composite tube, which is a suitable alternative to the most widely used aluminum alloy in the industry, (Al-Si alloy) has been investigated by optimizing the thermal parameters. In this study, the simultaneous effects of pouring temperature, solutionizing temperature, aging temperature, mold preheating temperature, wear force, and wear temperature on the sliding wear resistance of the inner surface of the above tube made by the centrifugal casting method was studied, and the results using Design Expert software were analyzed. The most effective parameter on the wear resistance of the above alloy was the dissolution temperature; the best temperature was 570 °C. The effect of aging temperature was found to be insignificant. The best pouring temperature was determined in the range of 750–700 °C, and the suitable temperature for preheating the mold was determined to be 300 °C.