Effects of Combination Treatment of Melt-blending and Electromagnetic Stirring on Refinement of Primary Si Phase in Al-20Si Alloy

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Effects of Combination Treatment of Melt-blending and Electromagnetic Stirring on Refinement of Primary Si Phase in Al-20Si Alloy
Vol. 30, Issue 11, Pages: 991-994(2010)
Published： 2010 ，
DOI：

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[1]王连登,朱定一,王尤生,宋伟,陈永禄,魏喆良,黄利光,李秋菊.熔体混合与电磁搅拌对Al-20Si合金中初生Si相的细化效果[J].特种铸造及有色合金,2010,30(11):991-994+974.

Effects of Combination Treatment of Melt-blending and Electromagnetic Stirring on Refinement of Primary Si Phase in Al-20Si Alloy. [J]. Special Casting & Nonferrous Alloys 30(11):991-994(2010)
[1]王连登,朱定一,王尤生,宋伟,陈永禄,魏喆良,黄利光,李秋菊.熔体混合与电磁搅拌对Al-20Si合金中初生Si相的细化效果[J].特种铸造及有色合金,2010,30(11):991-994+974. DOI：

Effects of Combination Treatment of Melt-blending and Electromagnetic Stirring on Refinement of Primary Si Phase in Al-20Si Alloy. [J]. Special Casting & Nonferrous Alloys 30(11):991-994(2010) DOI：

摘要

采用电磁搅拌和熔体混合技术制备Al-20Si合金

研究表明

单纯采用电磁搅拌技术制备Al-20Si时

会产生偏析层

其初生Si相平均尺寸在60μm以上;而采用熔体混合+电磁搅拌复合处理可使Al-20Si合金中的初生Si相尺寸降至16μm以下

并消除在单纯电磁搅拌合金边缘出现的粗大的初生Si相的偏析层。熔体混合处理处理还可以强化过共晶Al-20Si合金的电磁搅拌效果

获得良好细化效果。

Abstract

Al-20Si alloy was prepared by electromagnetic stirring and by melt-blending combining with electromagnetic stirring

respectively.The results indicate that a segregation layer can be observed in the Al-Si alloy prepared by electromagnetic stirring

in which the size of primary Si phase is more than 60μm

while coarse primary Si segregation occurred in edge of electromagnetic stirred Al-20Si alloy can be eliminated and size of primary Si phase can be refined to less than 16μm after combination treatment of melt-blending with electromagnetic stirring

which is attributed to melt-blending promoting the electromagnetic stirring effects on Al-20Si alloy.