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首页> 外文期刊>ISIJ international >Effect of the Melt Flow on the Solidified Structure of Middle Carbon Steel by Means of the Levitation Method Using Alternating and Static Magnetic Fields
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Effect of the Melt Flow on the Solidified Structure of Middle Carbon Steel by Means of the Levitation Method Using Alternating and Static Magnetic Fields

机译：交流和静磁场悬浮法研究熔体流动对中碳钢凝固组织的影响

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摘要

Effect of melt flow on the solidified structure of middle carbon steel was examined by a levitation method using alternating and static magnetic fields. In this study, solidification in the lower undercooling region (less than 70 K) was studied. As the static magnetic field increased, the melt flow in the levitated melt was continuously reduced. Portion of the equiaxed structure in the solidified structure also decreased with decreasing the melt flow velocity. The equiaxed structure was not observed when a static magnetic field exceeding 0.8 T was imposed during solidification. Average of the relative velocity, which was defined from motion between the inclusions for representing the melt flow velocity, was reduced to be approximately 0.01 m/s at a magnetic field of 0.8 T. The present results showed that fragmentation of the dendrite arms could be suppressed when the flow velocity in the melt was reduced to be in the order of 10~(-3) m/s.
机译：通过使用交变和静磁场的悬浮方法，研究了熔体流动对中碳钢凝固组织的影响。在这项研究中，研究了较低的过冷区域（小于70 K）的凝固。随着静磁场的增加，悬浮熔体中的熔体流动不断减少。随着熔体流动速度的降低，等轴结构在凝固组织中的比例也降低了。在凝固过程中施加超过0.8 T的静磁场时，未观察到等轴结构。由夹杂物之间的运动定义的代表熔体流动速度的相对速度平均值在0.8 T的磁场下降低到大约0.01 m / s。目前的结果表明，枝晶臂的断裂可能是当熔体中的流速降低到10〜（-3）m / s数量级时，会受到抑制。

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