中文摘要：

为了优化传统半固态搅拌铸造设备,设计出二层对推式搅拌桨,对其半固态搅拌铸造B_4C_p/A356时的流场进行了Fluent模拟.对模拟结果进行轴向流域、径向流域以及铝液搅拌形态的验证试验,对实验所得的两个铝锭进行了宏观的对比分析.发现二层对推式搅拌桨更易使碳化硼颗粒带入铝液中,促进碳化硼颗粒在铝液中的均匀分散;二级交错式桨叶布置可减少无碳化硼颗粒掺入区域.

英文摘要：

The traditional semi solid stirring casting equipment was optimized, the stirring rods of two-layer pusher blades were designed, and the flow field of B4Cp/A356 by semi-solid stirring casting was simulated by Fluent. The simulation results were analyzed by axial and radial drainage basins, and the mixing forms of aluminum liquid were analyzed. The verification experiment has been carried out, and the two ingots have been compared macroscopically. Results showed that the stirring rods of two-layer pusher blades makes boron carbide particles more easily into liquid aluminum, it promoted boron carbide particles in molten aluminum dispersed uniformly; two staggered blade arrangement can reduce no boron carbide particles doped region.