Abstract

The dispersion behavior of SiC particles in molten Mg alloys during stirring casting using four-bladed stirrer was investigated by numerical simulation. The effects of stirring speeds (300, 500, 800 rpm) and stirring temperatures (590, 620, 640 °C) on the dispersion uniformity of the SiC particles were investigated. Simulation results show that the particle concentration fluctuates along both the height and radial directions of the stirred vessel to varying degrees. When the stirring casting was performed at 590 °C and at 300 rpm, a relatively uniform spatial distribution of SiC particles without large aggregations was obtained.

中文翻译：

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镁基复合材料搅拌浇注过程中颗粒分散行为的数值模拟

摘要

通过数值模拟研究了四叶搅拌器搅拌铸造过程中SiC颗粒在熔融镁合金中的弥散行为。研究了搅拌速度（300、500、800 rpm）和搅拌温度（590、620、640 ℃）对 SiC 颗粒分散均匀性的影响。仿真结果表明，颗粒浓度沿搅拌容器的高度和径向均有不同程度的波动。当在 590 ℃和 300 rpm 下进行搅拌铸造时，获得了相对均匀的 SiC 颗粒空间分布，没有大的聚集体。