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论文类型：期刊论文

发表时间：2006-01-01

发表刊物：10th International Conference on Aliminium Alloys (ICAA-10)

收录刊物：SCIE、EI、CPCI-S、Scopus

卷号：519-521

期号：PART 2

页面范围：1759-1764

ISSN号：0255-5476

关键字：direct chill casting; aluminum alloy; electromagnetic field; microstructure; segregation

摘要：By imposing a high frequency magnetic field, the surface quality and macro/micro structure of the direct chill cast billets are improved. The casting speed can also be improved by simultaneous applying mold and electromagnetic coil, especially for the alloys with a wide freezing range such as Al-Cu-Mg alloy. The extent of macrosegregation in the Al-Cu-Mg alloy is reduced by application of the magnetic field. Moreover, the inverse segregation layer usually observed in the direct chill cast billet is eliminated by the effect of the electromagnetic field. The microstructure of the hot-rolled and heat treated billets cast under the high frequency field also show better characteristics.