交流电脉冲对过共晶Al-Si合金中初生Si相偏析的作用机制

张利民, 李宁, 朱龙飞, 殷鹏飞, 王建元, 吴宏景

Macrosegregation Mechanism of Primary Silicon Phase in Cast Hypereutectic Al-Si Alloys Under Alternating Electropulsing

ZHANG Limin, LI Ning, ZHU Longfei, YIN Pengfei, WANG Jianyuan, WU Hongjing

图7 液相内脉冲电流分布、对流状态、二次流及晶核迁移示意图

Fig.7 Sketches of current density distribution of electropulsing (a), forced flow field in bulk liquid (b), secondary flow (c), and crystal nucleus migration (d) (r, z—radial direction and axial direction in cylindrical coordinates, respectively)