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将行波磁场作用于ZL205A合金凝固过程中,研究了不同励磁电流强度的行波磁场对ZL205A合金试样中Cu元素分布、凝固组织以及晶粒尺寸的影响。结果表明,对ZL205A合金凝固过程中施加行波磁场,合金中Cu元素分布更均匀,细化相颗粒形成的明显沉积层厚度减小,且随着励磁电流强度的增加沉积层厚度逐渐减小,直至消失。经分析,这是由于行波磁场促进细化相颗粒向试样其他位置移动,避免其在底部沉积,同时提高了试样上部的形核率,减小了试样上部的晶粒尺寸。
The effect of traveling magnetic field on the solidification of ZL205A alloy was studied. The influence of traveling magnetic field with different exciting current intensity on Cu element distribution, solidification structure and grain size in ZL205A alloy was studied. The results show that for the ZL205A alloy solidified, the distribution of Cu element in the alloy is more uniform and the obvious sedimentary layer thickness decreases. With the increase of the exciting current intensity, the thickness of the sedimentary layer decreases gradually, Until disappear. It is analyzed that this is due to the traveling magnetic field promoting the movement of the fine phase particles to other positions of the sample, avoiding the deposition at the bottom, increasing the nucleation rate in the upper part of the sample and reducing the grain size in the upper part of the sample.