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中文摘要：
与实验和有限元素模拟，在团结上超声的力量的影响在半连续的扔 7050 铝合金铸块锭组织被研究，并且扔的效果在超声的地里在团结上加速结构也被分析。铸块锭的团结结构是同类地分布式的，并且它的谷物尺寸显然是的实验和模拟结果表演在 240 W 的超声的力量精制了。平均谷物尺寸，能从 Leica 显微镜被看见，是不到 100 m。当扔的速度是 4550 mm/min 时，最好的谷物精炼被获得。
英文摘要：
With the experiment and finite element simulation, the influences of power ultrasonic on the solidification structure of 7050 aluminum alloy ingot in semi-continuous casting were researched, and the effects of casting speed on solidification structure in ultrasonic field were also analyzed. The experiment and simulation results show that the solidification structure of the ingot is homogeneously distributed, and its grain size is obviously refined at ultrasonic power of 240 W. The average grain sizes, which can be seen from the Leica microscope, are less than 100 μm. When the casting speed is 45-50 mm/min, the best grain refinement is obtained.
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