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.
轰击后样品表面的显微硬度与耐腐蚀性测试结果表明，显微组织的细化，改善了金属材料表面的物化性能。
The results of microhardness and corrosive resistance showed that mechanical properties of surface layer have been improved due to the refined grain.
指出合理的挤压铸造工艺可细化合金显微组织，提高铸件致密性，改善合金力学性能。
It is pointed out that the rational squeezing casting technology can refine microstructure and improve the component compactness as well as the mechanical properties of alloy.
对挤压后的试样进行显微组织观察、硬度测试，研究等通道挤压工艺（ECAP）对AZ31镁合金的晶粒细化效果。
Through the microstructure observation and hardness test of extrusion specimen, the grain refinement effect of AZ31 magnesium alloy under ECAP process was studied.
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.
优点：可以破坏钢锭的铸造组织，细化钢材的晶粒，并消除显微组织的缺陷，从而使钢材组织密实，力学性能得到改善。
Advantages: it can destroy the ingot casting, steel grain refinement, and eliminating the defect in microstructure, thus making steel tissue close-grained, with improved mechanical properties.
显微组织分析证明：止裂处出现了强韧性极高的超细化组织，改善了裂尖处的机械性能。
The analysis on microstructure showed that the super fine structure appeared at crack arresting area, the mechanical properties were improved.
相对于手动电刷镀镀层，自动化镀层表面形貌更加均匀细化，组织更加致密，显微硬度更高。
Comparing with the manual coating, the auto coating had smoother surface, denser structure and higher hardness.
相对于手动电刷镀镀层，自动化镀层表面形貌更加均匀细化，组织更加致密，显微硬度更高。
Comparing with the manual coating, the auto coating had smoother surface, denser structure and higher hardness.
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