Study of ultrasonic melt treatment on the quality of horizontal continuously cast Al-1%Si alloy.
Study of ultrasonic melt treatment on the quality of horizontal continuously cast Al-1%Si alloy.
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DOI：
10.1016/j.ultsonch.2005.08.005
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发表时间：
2006-02
影响因子：
8.4
通讯作者：
Xin-Tao Li;Tingju Li;Xi-Meng Li;Jun-ze Jin
中科院分区：
文献类型：
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作者：
Xin-Tao Li;Tingju Li;Xi-Meng Li;Jun-ze Jin
通过对中间包内熔体温度波动的测量，研究了超声波熔体处理对Al-1%Si铸锭表面质量和凝固组织的影响。结果表明，超声熔体处理提高了熔体温度的均匀性。当超声波功率为1000W时，铸锭表面质量明显改善，铸态组织得到细化。并用电子探针分析了超声功率与硅元素晶界偏析的关系。结果表明，随着超声功率的增加，晶界偏析被抑制，并从理论上解释了这一现象。
The fluctuation of the melt temperature in a tundish was measured during casting and experiments were conducted to investigate the effects of ultrasonic melt treatment on the surface quality and solidification structures of Al–1%Si ingots. The results show that the uniformity of melt temperature was enhanced with the application of ultrasonic melt treatment. When the ultrasonic power is 1000W, the surface quality was evidently improved and grains of cast ingots were refined. Moreover, EPMA analysis was adopted to study the relationship between the ultrasonic power and boundary segregation of Si element. The result shows that boundary segregation is suppressed with the increase of ultrasonic power and the phenomenon was theoretically interpreted.