外场对水平连铸Al-1Si合金组织细化的影响

李捷; 郄喜望; 李廷举

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外场对水平连铸Al-1Si合金组织细化的影响
Effect of Outfield Treatment on Structure Refinement of Horizontal Continuous Casting Al-1Si Alloy
2008年第S1期页码：143-145
纸质出版日期： 2008 ，
DOI：

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[1]李捷,郄喜望,李廷举.外场对水平连铸Al-1Si合金组织细化的影响[J].特种铸造及有色合金,2008(S1):143-145.

Li Jie1, Qie Xiwang2, Li Tingju1. Effect of Outfield Treatment on Structure Refinement of Horizontal Continuous Casting Al-1Si Alloy[J]. Special Casting & Nonferrous Alloys, 2008,(S1):143-145.
[1]李捷,郄喜望,李廷举.外场对水平连铸Al-1Si合金组织细化的影响[J].特种铸造及有色合金,2008(S1):143-145. DOI：

Li Jie1, Qie Xiwang2, Li Tingju1. Effect of Outfield Treatment on Structure Refinement of Horizontal Continuous Casting Al-1Si Alloy[J]. Special Casting & Nonferrous Alloys, 2008,(S1):143-145. DOI：

摘要

研究了电磁场和超声场对Al-1Si合金晶粒细化的影响。研究结果表明在结晶器外部施加电磁场

随着电流强度的增加

合金的晶粒得到了细化

但当电流增大到120A时

晶粒却发生了粗化;对金属熔体施加超声场以后

晶粒得到了明显的细化

平均晶粒度由94.1μm降为31.2μm。对外场作用下水平连铸Al-1Si合金的组织细化机理进行了探讨。

Abstract

The effect of electromagnetic field and ultrasonic field on the grain refinement of horizontal continuous casting Al-1Si alloy microstructure was investigated. Experimental results show that: with electromagnetic field outside the mold

the solidification structure of the alloy is refined with the increase of current

but when the current increases to 120 A

the microstrucrure becomes coarse; with 1000w power ultrasonic field

the solidification structure is refined and the grain size reduces from 94.1 μm to 31.2 μm. The mechanism of the refinement of Al-1Si under electromagnetic field and ultrasonic field is preliminary discussed.