Effect of Current Intensity on the As-cast Structure of Cu-3.2％Ni-0.8％Si 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-Ni2Si phase.The morphology of δ-Ni2Si phase changes from coarse massive shape to fine dotlike shape.The above-mentioned effects become more obvious with the increasing in current intensity.