Effect of low-frequency electromagnetic field on microstructures and macro segregation of φ270 mm DC ingots of an Al-Zn-Mg-Cu-Zr alloy

被引：33
作者：
Dong, J [1 ]
Cui, JZ
Zeng, XQ
Ding, WJ
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Light Alloy Net Forming Natl Engn Res Ctr, Shanghai 200030, Peoples R China
[2] Northeastern Univ, Minist Educ, Key Lab Electomagnet Proc Mat, Shenyang 110004, Peoples R China
来源：
MATERIALS LETTERS | 2005年 / 59卷 / 12期
基金：
中国国家自然科学基金;
关键词：
low-frequency electromagnetic casing; microstructure; macrosegregation; Al-Zn-Mg-Cu-Zr;
D O I：
10.1016/j.matlet.2005.01.009
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Compared with traditional direct chilling casting (DC) ingot, the edge and center microstructures of (1)270 mm low-frequency electromagnetic casting (LFEC) ingot are fine and uniform; and the macrosegregation is also greatly reduced. When the electromagnetic intensity is kept as 9000 At, with decreasing the frequency, the center microstructures are much finer and the macrosegregation is much lower. In the range of frequency employed in the experiments, the optimum frequency is found to be 15 Hz. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：1502 / 1506
页数：5
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