Effects of Beverage Can Body Addition on β Phase Modification in Recycled Al-Si-Fe Cast Alloy

Abstract

The objective of this research was to study the effects of beverage can body addition on the  phase modification in recycled Al-Si-Fe cast alloys. Beverage can body parts with different proportions (5, 10, 20 and 30 wt.%) were added into the molted Al-Si-Fe alloy for 30 minutes holding time, then poured into a stainless steel mold at 0.2 °C/s cooling rate. The result on the beverage can body microstructure was found to consist of Al₆(Mn,Fe) and Mg₂Si phases. The microstructure of the Al-Si-Fe cast alloy indicates that the  phase that distributes in the -Al matrix. After the addition of 5 wt.% of the beverage can body, the size and length of the  phase decreases. The addition of 10, 20 and 30 wt.% of beverage can body showed transformation from the  phase to the  phase. In particular, the addition of 30 wt.% of the beverage can body which led to the most efficient of modification of the  phase. The quantitative analysis of the phases showed that the  phase decreased by 50-80 % depending on amount the beverage can body addition.