DC casting of light alloys under magnetic fields

被引：28

作者：

Cui Jian-zhong ^{[1
]}

Zhang Zhi-qiang ^{[1
]}

Le Qi-chi ^{[1
]}

机构：

[1] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110004, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2010年 / 20卷 / 11期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

low frequency electromagnetic field; light alloy; DC casting; grain refinement; ELECTROMAGNETIC-FIELD;

D O I：

10.1016/S1003-6326(09)60415-5

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The working principle of LFEC(Low frequency electromagnetic casting) process developed in Northeastern University, China was introduced and the metallurgical results of LFEC were discussed according to the casting practices. The low frequency field around the mold produces Lorenz force, which can be divided into two parts: one is the potential force which will be balanced by a pressure gradient of the liquid and results in the formation of a convex surface meniscus and improves the surface quality; the other is the rotary force which stirs the liquid in the mold to refine the microstructures and homogenize the distribution of alloying elements. LFEC can refine microstructures remarkably, improve surface quality of the ingots, depress macrosegregation and eliminate cracks. Some new technologies, such as horizontal direct chill casting under low-frequency electromagnetic field (HLEC), DC casting of hollow billets under electromagnetic fields (HBEC), electromagnetic modifying of hypereutectic Al-Si alloys(EMM), air film casting under static magnetic field (AFCM), and multi-ingots casting under low-frequency magnetic field (MLFEC) were developed based on LFEC.

引用

页码：2046 / 2050

页数：5

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