在高纯铝中分别添加不同量的铝铈合金细化剂，考察了其铸态显微组织、力学性能的变化规律。
The high-purity aluminum was modified with different amount of Al-Ce grain refiners and the microstructures and mechanical properties of the modified aluminum were investigated.
金属铸态组织细化的关键是获得大量细小等轴晶。
The key to fining the structure of ingot casting lies in the formation of a number of fine equiaxed crystal grains.
与铸态合金相比，亚快速凝固合金组织明显细化。
Compared with the as-cast alloy, microstructure of the sub-rapid solidification alloy was apparently refined.
添加稀土元素之后 ，镁铝锌合金的铸态组织得到细化 ，并在显微组织中形成铝的稀土相 ；
The whole as cast microstructures of the alloy were refined and RE containing Al phase was formed with RE addition. The ageing peak value was slightly raised.
添加稀土元素之后 ，镁铝锌合金的铸态组织得到细化 ，并在显微组织中形成铝的稀土相 ；
The whole as cast microstructures of the alloy were refined and RE containing Al phase was formed with RE addition. The ageing peak value was slightly raised.
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