Effect of electric pulse treatment on solidification structure of an Al- 15 percent Si alloy

摘要

The effect of electric pulse modifying on the solidification structure of an Al-15 percent Si alloy was investigated. The result shows that the primary silicon disappears sometimes and the eutectic phase is refined after the treatment of EP (electric pulse) though there are different modalities in different treating durations. DSC (differential scanning calorimetry) analysis indicates that the super-cooling temperature decreases and the freezing range narrows evidently after the electric pulse treatment.