脉冲磁场对Mg-Gd-Y-Zr合金组织中溶质含量的影响

汪彬; 沈燕青; 朱天宇

doi:10.15980/j.tzzz.2012.05.009

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脉冲磁场对Mg-Gd-Y-Zr合金组织中溶质含量的影响
Effect of the Pulsed Magnetic Field on the Solute Content in Mg-Gd-Y-Zr Magnesium Alloy
2012年32卷第5期页码：407-409
纸质出版日期： 2012 ，
DOI： 10.15980/j.tzzz.2012.05.009

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[1]汪彬,沈燕青,朱天宇.脉冲磁场对Mg-Gd-Y-Zr合金组织中溶质含量的影响[J].特种铸造及有色合金,2012,32(05):407-409.

Wang Bin, Shen Yanqing, Zhu Tianyu. Effect of the Pulsed Magnetic Field on the Solute Content in Mg-Gd-Y-Zr Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2012,32(5):407-409.
[1]汪彬,沈燕青,朱天宇.脉冲磁场对Mg-Gd-Y-Zr合金组织中溶质含量的影响[J].特种铸造及有色合金,2012,32(05):407-409. DOI： 10.15980/j.tzzz.2012.05.009.

Wang Bin, Shen Yanqing, Zhu Tianyu. Effect of the Pulsed Magnetic Field on the Solute Content in Mg-Gd-Y-Zr Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2012,32(5):407-409. DOI： 10.15980/j.tzzz.2012.05.009.

摘要

在Mg-Gd-Y-Zr镁合金凝固过程中施加脉冲磁场

通过改变脉冲磁场的脉冲频率

研究脉冲磁场对Mg-Gd-Y-Zr镁合金凝固的影响。结果表明

脉冲磁场使Mg-Gd-Y-Zr镁合金晶粒细化的同时

在10Hz外加脉冲磁场条件下使晶粒内部的合金元素Gd和Y的溶质含量增加

晶界析出的共晶含量相应减少。脉冲磁场使熔体内部的带电离子沿磁力线方向自旋运动

以及周期性变化的电场力对带电离子自由振动的抑制作用导致的溶质原子迁移所需的能量势垒增加是晶粒内部Gd、Y元素溶质含量增加的原因。

Abstract

Effects of the frequency of the pulsed magnetic field on Mg-Gd-Y-Zr magnesium alloy during solidification process were investigated.With applying pulsed magnetic field during the solidification

the grain size can be refined.At the same time

the content of Gd or Y in the grain are increased

and the amount of eutectic structure on the grain boundary is also correspondingly decreased by applying the pulsed magnetic field of 10 Hz.The charged ions moves in a spiral way in the direction of magnetic force line with the action of pulsed magnetic field

and the periodic change of the magnitude and direction of electric field force restrains the free vibration of particles

resulting in the more energy potential barrier required to be overcome

which are responsible for the increase of solute content of Gd and Y in grains.