低频电磁半连续铸造AC52锭坯

和玉晓; 张志强; 宝磊; 乐启炽; 崔建忠

doi:10.15980/j.tzzz.2013.04.024

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低频电磁半连续铸造AC52锭坯
Low Frequency Electromagnetic Semi-continuous Casting AC52 Magnesium Alloy Billets
2013年33卷第4期页码：357-360
纸质出版日期： 2013 ，
DOI： 10.15980/j.tzzz.2013.04.024

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[1]和玉晓,张志强,宝磊,乐启炽,崔建忠.低频电磁半连续铸造AC52锭坯[J].特种铸造及有色合金,2013,33(04):357-360.

He Yuxiao, Zhang Zhiqiang, Bao Lei, et al. Low Frequency Electromagnetic Semi-continuous Casting AC52 Magnesium Alloy Billets[J]. Special Casting & Nonferrous Alloys, 2013,33(4):357-360.
[1]和玉晓,张志强,宝磊,乐启炽,崔建忠.低频电磁半连续铸造AC52锭坯[J].特种铸造及有色合金,2013,33(04):357-360. DOI： 10.15980/j.tzzz.2013.04.024.

He Yuxiao, Zhang Zhiqiang, Bao Lei, et al. Low Frequency Electromagnetic Semi-continuous Casting AC52 Magnesium Alloy Billets[J]. Special Casting & Nonferrous Alloys, 2013,33(4):357-360. DOI： 10.15980/j.tzzz.2013.04.024.

摘要

研究了熔炼净化和铸造条件对低频电磁半连续铸造耐热稀土镁合金AC52微观组织的影响

该合金为Mg-（4～5）Al-（1～2）Ca-（0.3～0.6）Mn-（0.5～0.7）RE。结果表明

镁合金熔炼炉中采用不锈钢丝网进行熔炼过滤可以显著提高熔体的纯净度;在30Hz的频率下

电流为60A

铸造速度为165mm/min时

AC52铸坯组织均匀

晶粒细小

边部和中间的晶粒尺寸差异较小

没有明显的偏析现象。

Abstract

Influences of smelting purification and casting conditions on the microstructure of low frequency electromagnetic semi-continuous casting heat resistant rare earth magnesium alloy Mg-（4～5）Al-（1～2）Ca-（0.3～0.6） Mn - （0.5～0.7）RE （AC52） were investigated. The results show that magnesium alloy melting furnace with the stainless steel net as filter can improve greatly the purity of the melt. Under the condition of 30 Hz

with the current intensity of 60 A and casting speed of 165 mm/min

the uniform microstructure with fine grain can be observed in the AC52 magnesium alloy. Meanwhile

the difference of grain size between the outer and heart can be neglected

and obvious segregation is absent.