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论文类型：期刊论文

发表时间：2012-04-01

发表刊物：MATERIALS TECHNOLOGY

收录刊物：SCIE、EI、Scopus

卷号：27

期号：2

页面范围：176-179

ISSN号：1066-7857

关键字：Ultrasonic treatment; Clad ingots; Aluminium alloy; Solidification

摘要：A new process using ultrasonic treatment for the production of clad ingots of 3003 and 4004 aluminium alloy was investigated. The interface region of the clad ingots was investigated by metallographic examination and energy dispersive microanalysis. The experimental results show that when the inner layer of the 4004 alloy melt was treated ultrasonically, the solidification structure changed from dendritic to globular grains, and the average grain size was reduced to 67.5 mu m. In addition, the morphology of eutectic silicon near the interface of 3003 and 4004 alloys was modified from a coarse acicular plate-like morphology to a finely short stick form when ultrasonic treatment was used.