Effect of Current Intensity on the As-cast Structure of Cu-3.2Ni-0.8Si Alloy during Low Frequency Electromagnetic Casting

摘要

The effect of electromagnetic field on the solidification structure of Cu-3.2%Ni-0.8%Si alloy had been investigated in this paper. The results show that applying electromagnetic field during the solidification of Cu-3.2%Ni-0.8%Si alloy can refine as-cast structure and δ-Ni_2Si phase. The morphology of δ-Ni_2Si phase changes from coarse massive shape to fine dotlike shape. The above-mentioned effects become more obvious with the increasing in current intensity.