It shows that large dendritc grains can be changed into refiner and equiaxial grains by pulsed magnetic field in Al -alloy solidified structure.

• 实验结果表明，强脉冲磁场能把铝合金的凝固组织从粗大的树枝晶细化为等轴晶，而且磁场愈强，细化效果愈显著。