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Effect of strong magnetic field on solid solubility and microsegregation during directional solidification of Al-Cu alloy

机译：强磁场对Al-Cu合金定向凝固过程中固溶度和微偏析的影响

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摘要

The effect of a strong magnetic field on the solid solubility and the microsegregation during directional solidification of Al-Cu alloy at lower growth speeds (1-10 μm/s) has been investigated experimentally. Results indicate that the magnetic field causes the reduction of the grain boundary and promotes the amalgamation of the grains. Further, measurement results reveal that the magnetic field increases the solid solubility and decreases the microsegregation. It is also found that the value of the solid solubility increases as the magnetic field and the temperature gradient increase. The modification of the solid solubility and the microsegregation under the magnetic field is attributed to the thermoelectric magnetic force acting on the solid and the interdendritic thermoelectric magnetic convection. The present work may initiate a new method to enhance the solid solubility and to eliminate the microsegregation in Al-based alloys via an applied strong magnetic field during directional solidification.
机译：实验研究了强磁场对Al-Cu合金在较低生长速度（1-10μm/ s）下定向凝固过程中固溶度和微观偏析的影响。结果表明，磁场引起晶界的减小并促进了晶粒的融合。此外，测量结果表明，磁场增加了固溶度并减少了微偏析。还发现，固溶度的值随着磁场和温度梯度的增加而增加。磁场下固体溶解度和微偏析的改变归因于作用在固体上的热电磁力和树枝状热电对流。本工作可能会启动一种新方法，以通过定向凝固过程中施加的强磁场来增强固溶度并消除Al基合金中的微偏析。

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  • 来源
    《Journal of Materials Research》 |2013年第20期|2810-2818|共9页
  • 作者

    Xi Li; Annie Gagnoud; Zhongming Ren; Yves Fautrelle; Francois Debray;

  • 作者单位

    Department of Materials Science Engineering, Shanghai University, Shanghai 200072, People's Republic of China EPM/SIMAP, Grenoble Institute of Technology, St Martin d'Heres Cedex 38402, France;

    EPM/SIMAP, Grenoble Institute of Technology, St Martin d'Heres Cedex 38402, France;

    Department of Materials Science Engineering, Shanghai University, Shanghai 200072, People's Republic of China;

    EPM/SIMAP, Grenoble Institute of Technology, St Martin d'Heres Cedex 38402, France;

    Grenoble High Magnetic Field Laboratory, Grenoble Cedex 9, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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