Solidification Structure of Cu-Fe Alloy under a Rotary Electromagnetic Stirrer

被引：0

作者：

QU Lei ^{[1
]}

WANG En-gang ^{[1
]}

ZUO Xiao-wei ^{[1
]}

ZHANG Lin ^{[1
]}

HE Ji-cheng ^{[1
]}

机构：

[1] Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education),Northeastern University

来源：

Journal of Iron and Steel Research(International) | 2012年 / S1期

基金：

国家高技术研究发展计划(863计划); 中央高校基本科研业务费专项资金资助; 中国国家自然科学基金;

关键词：

Cu-Fe alloy; rotary electromagnetic stirring; grain size; Fe dendrites;

D O I：

10.13228/j.boyuan.issn1006-706x.2012.s1.071

中图分类号：

TG146.11 [];

学科分类号：

080502 ;

摘要：

The effect of rotary electromagnetic stirring(EMS)on the Cu grain size and Fe dendrites is investigated in this paper,in order to get a Cu-Fe alloy ingot with good quality.The macro-and micro-structures are observed by Leica-DMR optical microscope.The solidification structures of Cu-2 and 8wt.%Fe consist with finer equiaxed grains.The Cu grain size is most sensitive to the Fe content.EMS can’t effectively improve the grain size for the Cu-Fe alloy.For ingot cooled without EMS,there are also many large Fe-rich particles distribute in the Cu-matrix,beside the Fe dendrites,because of the existence of metastable miscibility gap in the undercooled liquid state.And the Fe-rich phases are not found in the ingots with EMS,indicating the EMS can affect the undercooling of the liquid and further restrain the liquid phase separation.Under the EMS,the Fe dendrites break up into many smaller Fe fragments.And the size of Fe fragments decreases with the increasing stirring current.

引用

页码：351 / 354

页数：4

共 4 条

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[2]

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[3]

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