علی فردی ایلخچی

The existence of casting defects controls the mechanical behavior of aluminum alloys A357. Aluminum in liquid form is prone to oxidation and hydrogen absorption. Thus, aluminum components will always include gas porosity and oxide compounds. Furthermore, improper feeding will result in shrinkage voids in the component, which are extremely harmful to the fatigue properties. While contraction pores have an uneven three-dimensional form, gas pores are typically spherical. Aluminum oxide films can also be connected to any of these two types of pores. In this study, the QC quality index was utilized to evaluate two alloys, AlMg6 and A357, and their substitutability with one another. This powerful criterion was chosen since it allows for a more accurate rating of the alloys. Based on the Qc results for the two alloys under both minimum and maximum conditions, the AlMg6 alloy has a much higher value of this quality index than the A357 alloy. As a result, replacing the AlMg6 alloy with the A357 alloy in sensitive applications is not feasible and will carry a significant risk.