电磁搅拌对AlSi7Mg合金显微组织的影响  

Effect of Electromagnetic Stirring on Microstructures of AlSi7Mg Alloys

作　　者：田战峰[1] 张志峰[1] 徐骏[1] 石力开[1] 弓育文[1] 杨必成[1] 王海东[1] 汤孟欧[1] 

机构地区：[1]北京有色金属研究总院,北京100088

出　　处：《热加工工艺》2006年第9期46-49,共4页Hot Working Technology

基　　金：国家863计划资助项目"半固态轻合金设计;制备与成形技术开发与应用"(课题编号:2002AA336080)

摘　　要：采用自行开发的电磁搅拌器,研究了多种不同电磁搅拌方式,在不同工艺条件下,单独施加或复合施加对AlSi7Mg合金微观组织的影响。试验结果表明:单一施加旋转感应电磁搅拌时,浆料径向组织很不均匀;单一施加无芯感应电磁搅拌,当搅拌电流较小时,径向组织也不均匀,增大电流浆料质量有明显改善;采用(旋转感应+无芯感应)复合电磁场进行复合电磁搅拌时,可在电流较小时获得满意的浆料质量。Effect of different electromagnetic stirring on microstructures of AlSi7Mg alloy was studied by self-made electromagnetic stirring device. Experimental results show that radial microstrueture is very nonuniform when using single rotary induce electromagnetic stirring method. Same phenomena oeeurr when using single non-core induce electromagnetic stirring method with low current. The uniformity of semi-solid slurry is obviously improved with increasing current. The good quality slurry can be obtained when using rotary and non-core induce multi- electromagnetic stirring with low current.

关 键 词：ALSI7MG合金 半固态 电磁搅拌 

分 类 号：TG249.9[金属学及工艺—铸造]