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对不同温度及不同搅拌工艺下得到的材料的显微组织的比较,确定了合理的半固态温度和搅拌工艺,即半固态温度为590oC,震荡电流为500A。随后对单个线圈电磁搅拌过程进行建模及电磁场和流速场的耦合模拟得到了电磁场和流速场分布,此结果与电磁搅拌的原理及实验结果相一致。计算出在该温度和工艺下熔体内部的平均流动速度为3.2cm/s,将该结果作为能否得到半固态浆料的判据。
The comparison of the microstructure of materials obtained under different temperatures and different stirring process, to determine a reasonable semi-solid temperature and mixing process, that is, the semi-solid temperature of 590oC, the oscillation current of 500A. Then, the electromagnetic field and velocity field distribution of the electromagnetic coil and the velocity field were simulated by modeling the electromagnetic stirring process of a single coil and coupling the electromagnetic field with the velocity field. The results are consistent with the principle and experimental results of electromagnetic stirring. The average melt flow rate inside the melt at this temperature and process was calculated to be 3.2 cm / s, and this result was used as a criterion for obtaining a semi-solid slurry.