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为了探究功率超声对ф1 250mm大规格2219铝合金铸锭微观缺陷的影响,对试样打磨抛光处理后进行扫描电镜能谱分析以及光学显微分析。结果表明,超声铸锭氧化夹杂含量显著减少(下降了21%),缺陷平均尺寸从10.606μm减小到8.096μm,下降了23.7%,但是超声铸锭微观缺陷数量有所增加(由2 452上升到3 786)。功率超声可以有效抑制大规格铝合金铸锭中大尺寸微观缺陷的出现。
In order to investigate the effect of ultrasonic power on the microstructure defects of ф1 250mm large size 2219 aluminum alloy ingot, the samples were polished and polished, and then analyzed by scanning electron microscopy and optical microscopy. The results showed that the content of oxidized inclusions decreased significantly (by 21%) and the mean size of defects decreased from 10.606μm to 8.096μm, a decrease of 23.7%. However, the number of microscopic defects in ultrasonic casting ingot increased (from 2 452 up To 3 786). Power ultrasound can effectively inhibit the appearance of large-size microscopic defects in large-size aluminum alloy ingot.