中文摘要：

A356 合金的半固体泥浆，由 Al-Ti-B 主人合金精制谷物，被准备由低过热流并且轻视电磁激动人心。谷物在生产的泥浆在形态学和主要α阶段的谷物尺寸上精制的效果被研究。结果显示有像粒子、像插座的主要α阶段的泥浆能被准备由低过热流并且轻视电磁从液体 A356 合金激动人心精制谷物，在哪个流的温度能合适被提起。与没有谷物精制的 A356 样品相比，主要α的谷物尺寸和粒子形态学象谷物的分发一样分阶段执行与沿着像粒子或像插座在在 A356 的铸块锭光线被谷物精制显著地改进。

英文摘要：

The semi-solid slurry of A356 alloy, which is grain-refined by Al-Ti-B master alloy, is prepared by low superheat pouring and slight electromagnetic stirring. The effects of grain refining on the morphology and the grain size of the primary α phase in the slurry manufactured are researched. The results indicate that the slurry with particle-like and rosette-like primary α phases can be prepared by low superheat pouring and slight electromagnetic stirring from liquid A356 alloy grain-refined, in which the pouring temperature can be suitably raised. Compared with the A356 samples without grain refining, the grain size and particle morphology of primary α phase as well as the distribution of the grain with particle-like or rosette-like along radial in the ingot in A356 are markedly improved by grain refining.