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论文类型： 期刊论文

发表时间： 2007-08-01

发表刊物： MATERIALS TRANSACTIONS

收录刊物： SCIE、EI、Scopus

卷号： 48

期号： 8

页面范围： 2194-2201

ISSN号： 1345-9678

关键字： direct chill casting; aluminum wrought alloy; electromagnetic casting; casting speed

摘要： A mold with slits and external cooling water channels was designed for the direct chill casting processing. By imposing a high frequency magnetic field, the surface quality and microstructure of the direct chill cast billets are improved. The casting speed could be improved by the simultaneous use of mold and electromagnetic coil. In the case of one kind of Al-Cu-Mg alloy with a wide freezing range, the critical casting cast with electromagnetic field is more fine and uniform than that of the to break-out can be improved 60%. The microstructure of the billet conventionally cast billet, and the subsurface segregation usually observed in the conventional billets is eliminated.