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6 有无电脉冲时侧壁传热受限条件下Al-30%Si合金凝固组织的OM像

Fig.6 Solidification macrostructures of Al-30%Si alloy under the condition of insulated side wall without electropulsing (a) or with electropulsing of 230 A/cm2 (c) and high magnified OM images of region b (b), region d (d), region e (e), and region f (f)