Understanding of phase evolution during the solidificationSolidification process is critical in the determination of the final property performance of industrial alloys. Applying an electric current during solidificationSolidification modifies the dynamics of metalMetals alloy solidificationSolidification and results in a refined microstructureMicrostructure. Fe is a common contaminant in the Al castingCasting industryIndustry that detrimentally impacts the performance of structural Al alloysAl alloy and requires the use of extensive processingProcessing to utilize Fe-rich metalMetals sources. In this study, an Al–4wt.%Fe alloy was solidified while passing varied amplitudes of alternating current through the system. We observed significant changes to the size distributionDistribution of α-Al dendritesDendrites throughout the system and segregation of primary Al3Fe plates to the bottom of the melt, while the eutectic spacing was largely unaffected. This electric current can disrupt the typical phase formation pathways, leading to unexpected morphological changes. This research further elucidates the effects of electric current and highlights its potential for industrial application.