Columnar-to-equiaxed transition during directional solidification under strong magnetic field

机译：强磁场下定向凝固过程中的柱状到等温转变

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Effects of strong magnetic fields on the columnar-to-equiaxed transition(CET)have been investigated experimentally.Experimental results show that the application of a strong magnetic field causes a dendrite fragmentation and then the CET.The thermoelectric magnetic force acting on cells/dendrites and equiaxed grains in the mushy zone has been studied numerically.Numerical results reveal that a torque is created on cells/dendrites and equiaxed grains and the value of the thermoelectric magnetic force increases as the magnetic field intensity increase.This torque breaks cells/dendrites and drives the rotation of equiaxed grains.As a consequence,the CET will occur during directional solidification under a strong magnetic field.This may initiate a new method to induce the CET via an applied strong magnetic field during directional solidification.

机译：实验研究了强磁场对柱状到等轴跃迁（CET）的影响。实验结果表明，强磁场的施加会引起枝晶碎片化，然后引起CET。热电磁力作用于细胞/枝晶上。数值研究表明，在细胞/枝晶和等轴晶上产生了一个扭矩，并且随着磁场强度的增加，热电磁力的值增加了，该扭矩破坏了细胞/枝晶和晶格。因此，在强磁场下定向凝固过程中会发生CET，这可能会引发一种新方法，即在定向凝固过程中通过施加强磁场来诱导CET。

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来源
《7th International Conference on Electromagnetic Processing of Materials》|2012年|1-4|共4页
会议地点 Beijing(CN)
作者
Xi LI; Dafan DU; Annie GAGNOUD; Yves FAUTRELLE; Zhongming REN;
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作者单位

Department of Material Science and Engineering,Shanghai University,200072 Shanghai,P.R.China;

SIMAP-EPM-Madylam/CNRS,ENSHMG,BP 95,38402 St Martin d'Heres Cedex,France;

Department of Material Science and Engineering,Shanghai University,200072 Shanghai,P.R.China;

SIMAP-EPM-Madylam/CNRS,ENSHMG,BP 95,38402 St Martin d'Heres Cedex,France;

SIMAP-EPM-Madylam/CNRS,ENSHMG,BP 95,38402 St Martin d'Heres Cedex,France;

Department of Material Science and Engineering,Shanghai University,200072 Shanghai,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
Columnar-to-equiaxed transition; strong magnetic field; directional solidification;

机译：柱状至等温转变;强磁场;定向凝固;

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专利

1. Columnar-to-Equiaxed Transition and Equiaxed Grain Alignment in Directionally Solidified Ni3Al Alloy Under an Axial Magnetic Field [J] . Liu Huan, Xuan Weidong, Xie Xinliang, Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science . 2017,第9期

机译：轴向磁场下柱状到等轴过渡和等轴晶粒对准轴向磁场下的直向凝固Ni3Al合金
2. Columnar-to-equiaxed transitions in al-based alloys during directional solidification under a high magnetic field [J] . Xi Li, Yves Fautrelle, Kader Zaidat, Journal of Crystal Growth . 2010,第2期

机译：高磁场下定向凝固过程中铝基合金的柱状到等温转变
3. In situ observation of columnar-to-equiaxed transition in directional solidification using synchrotron X-radiation imaging technique [J] . Qing Dong, Jiao Zhang, Jinfang Dong, Materials Science and Engineering . 2011,第期

机译：使用同步辐射X射线成像技术原位观察定向凝固过程中的柱状到等轴转变
4. Columnar-to-equiaxed transition during directional solidification under strong magnetic field [C] . Xi LI, Dafan DU, Annie GAGNOUD, International Conference on Electromagnetic Processing of Materials . 2012

机译：强磁场下定向凝固过程中的柱状静脉过渡
5. The adjoint method for the design of directional binary alloy solidification processes in the presence of a strong magnetic field. [D] . Sampath, Rajiv. 2001

机译：在强磁场存在下设计定向二元合金凝固过程的辅助方法。
6. Analysis of macrosegregation formation and columnar-to-equiaxed transition during solidification of Al-4 wt.Cu ingot using a 5-phase model [O] . M. Ahmadein, M. Wu, A. Ludwig -1

机译：使用5相模型分析Al-4 wt。％Cu锭凝固过程中宏观偏析的形成和柱状转变为等转变
7. Comparative study of directional solidification of Al-7 wt Si alloys in Space and on Earth: Effects of gravity on dendrite growth and Columnar-to-equiaxed transition [O] . Y.Z. Li, N. Mangelinck-Noël, G. Zimmermann, 2019

机译：Al-7wt％Si合金在空间和地球上定向凝固的比较研究：重力对枝晶生长和柱状到等过渡的影响

Columnar-to-equiaxed transition during directional solidification under strong magnetic field

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