As-cast Microstructure of Low-frequency Electromagnetic Horizontal Continuous Casting Aluminum Alloy Slab

Zhao Zhihao; Zhu Qingfeng; Zuo Yubo; Cui Jianzhong

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As-cast Microstructure of Low-frequency Electromagnetic Horizontal Continuous Casting Aluminum Alloy Slab
Issue 10, Pages: 813-815(2008)
Published： 2008 ，
DOI：

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[1]赵志浩,朱庆丰,左玉波,崔建忠.低频电磁场水平连铸铝合金板坯铸态组织[J].特种铸造及有色合金,2008(10):813-815+738.

Zhao Zhihao, Zhu Qingfeng, Zuo Yubo, et al. As-cast Microstructure of Low-frequency Electromagnetic Horizontal Continuous Casting Aluminum Alloy Slab. [J]. Special Casting & Nonferrous Alloys (10):813-815(2008)
[1]赵志浩,朱庆丰,左玉波,崔建忠.低频电磁场水平连铸铝合金板坯铸态组织[J].特种铸造及有色合金,2008(10):813-815+738. DOI：

Zhao Zhihao, Zhu Qingfeng, Zuo Yubo, et al. As-cast Microstructure of Low-frequency Electromagnetic Horizontal Continuous Casting Aluminum Alloy Slab. [J]. Special Casting & Nonferrous Alloys (10):813-815(2008) DOI：

摘要

研究了低频电磁场对水平连铸铝合金板坯铸态组织以及合金元素宏观分布的影响。将传统水平连铸铝合金板坯的铸态组织与低频电磁水平连铸板坯进行了比较。研究结果表明

在铝合金水平连铸中施加低频电磁场可显著提高铸锭品质

具体表现为:施加低频电磁场能够细化晶粒

削弱重力对铸锭凝固的影响

从而在整个铸锭横截面上获得细小均匀的铸态组织;施加低频电磁场能够减少负偏析和重力偏析

使溶质元素在铸锭横截面上的分布趋于均匀。

Abstract

Effects of low frequency electromagnetic field on ingot surface

as-cast microstructure and alloying element distribution in horizontal continuous casting aluminum alloy slab were investigated

which was compared with that of conventional horizontal continuous casting aluminum alloy slab. The results reveal that low frequency electromagnetic field can greatly improve the as-cast microstructure of horizontal continuous aluminum alloy slab. The uniformly distributed fine as-cast microstructure in the cross section of the whole ingot can be observed as a result of refining grain size and weakening the effects of gravity on solidification process of ingot by low frequency electromagnetic field. In addition

the solute element is more homogeneously distributed in the cross section of the slab

which is resulted from reducing negative segregation and gravity segregation by low frequency electromagnetic field.

关键词

低频电磁场铝合金水平连铸铸态组织

Keywords

Low Frequency Electromagnetic FieldAluminum AlloyContinuous CastingAs-cast Microstructure

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