电磁分离工艺对铝合金中富铁相显微形貌的影响  

Effect of Electromagnetic Separation Process on Microstructures of Iron-rich Phase in Aluminum Alloy

作　　者：刘雅娟 陈东风 

机构地区：[1]平高集团有限公司,河南平顶山467001

出　　处：《铸造技术》2014年第8期1791-1793,共3页Foundry Technology

摘　　要：研究了电磁分离工艺下铝合金熔体中初生相的迁移行为,并探讨了变质剂Mn对富铁相显微形貌的影响。结果表明,随着施加磁场时间的延长,富铁相逐渐向四周迁移至表层。在Mn/Fe的摩尔比为1.5时,针状的富铁相变成了块状或球状,迁移阻力减小,电磁净化的效率比变质前大幅度提高。The migration behavior of primary phase in aluminum alloy melt was studied by electromagnetic separation process, and the effect of the inoculant Mn on the microstructures of the iron-rich phase was discussed. The results show that the iron-phase migrates to surface layer from periphery with the increase of the applied magnetic field time. The needlelike iron-rich phase becomes bulk-like or spherical, and migration resistance decreases when the molar ratio of Mn/Fe is 1.5, resulting in the great improvement of electromagnetic separation efficiency compared with that before modification.

关 键 词：高频磁场 电磁分离 富铁相 迁移行为 

分 类 号：TG292[金属学及工艺—铸造] TG146.21[一般工业技术—材料科学与工程]