Manufacturing and Characterization of Cast Al Wheels Made of A356 Aluminum Alloy with Varying Scrap Contents
摘要
Automotive companies aim to conserve raw materials, energy, and natural resources, and to prevent environmental pollution by reducing emissions by using recycled aluminum. In this study, cast aluminum automotive wheels were produced via low-pressure casting using melting ratios of 30% scrap aluminum + 70% primary aluminum, 50% scrap aluminum + 50% primary aluminum, and 100% scrap aluminum. The microstructure, mechanical properties, cavitation, and corrosion resistance of wheels containing 30%, 50%, and 100% of scrap aluminum were examined. It was observed that mechanical strength tended to decrease with increasing scrap aluminum content. However, the minimum tensile strength, yield strength, and percent elongation limits were achieved at all scrap ratios. Cavitation resistance was found to decrease significantly in the 50% scrap aluminum + 50% primary aluminum and 100% scrap aluminum samples. Similarly, corrosion resistance was observed to decrease with increasing scrap aluminum ratio.
Graphical Abstract