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首页> 外文会议>7th International Conference on Electromagnetic Processing of Materials >Solidification Structure of Cu-Fe Alloy under a Rotary Electromagnetic Stirrer
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Solidification Structure of Cu-Fe Alloy under a Rotary Electromagnetic Stirrer

机译：旋转电磁搅拌下Cu-Fe合金的凝固组织

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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.
机译：本文研究了旋转电磁搅拌（EMS）对Cu晶粒度和Fe枝晶的影响，以得到优质的Cu-Fe合金锭。Leica-DMR观察了宏观和微观结构光学显微镜.Cu-2和8wt。％Fe的凝固组织具有更细的等轴晶粒，Cu晶粒尺寸对Fe含量最敏感，EMS无法有效地改善Cu-Fe合金的晶粒尺寸。在没有EMS的情况下冷却的铸锭，由于过冷液相中存在亚稳态的混溶间隙，因此在Cu基体中，除了铁枝晶外，还分布着许多大的富铁粒子。带有EMS的铸锭，表明EMS会影响液体的过冷并进一步限制液相分离。在EMS下，Fe树枝状晶体分解为许多较小的Fe碎片。随着搅拌电流的增加，Fe碎片的尺寸减小。

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  • 来源
  • 会议地点 Beijing(CN)
  • 作者

    QU Lei; ZUO Xiao-wei; WANG En-gang; ZHANG Lin; HE Ji-cheng;

  • 作者单位

    Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education). Northeastern University,Shenyang 110819,Liaoning P. R. China;

    Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education). Northeastern University,Shenyang 110819,Liaoning P. R. China;

    Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education). Northeastern University,Shenyang 110819,Liaoning P. R. China;

    Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education). Northeastern University,Shenyang 110819,Liaoning P. R. China;

    Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education). Northeastern University,Shenyang 110819,Liaoning P. R. China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 一般性问题;
  • 关键词

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

    机译：铜铁合金;旋转电磁搅拌;晶粒度;铁枝晶;

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