本文进行了强静磁场下电磁振荡对Al-4.5%Cu合金凝固组织影响的研究，发现同时施加静磁场和交变电流后，初生-Al相由粗大的树枝晶转变成细小的球状晶，晶粒的细化程度随电流的增大而增加，随磁场增加先增加后略有降低。X射线衍射结果表明，施加磁场后，晶粒的<111>晶向沿磁场方向取向。晶粒取向度随晶粒的增大而降低。从球形颗粒旋转取向和颗粒迁移角度推导了晶体粒径和取向的关系。
The effects of electromagnetic vibration with a strong magnetic field on the solidified structure of hypoeutectic Al-4.5%Cu alloy were experimentally studied. It was found that the morphology of was transferred from coarse dendrite to refined spheroid. At a constant magnetic flux density, the size of grains was decreased significantly with the increasing of current density. While at a constant current density, the refinement was increased firstly with the increasing of magnetic flux density and then diminished appreciably. X-ray diffraction indicated that the refining grains were oriented with <111> towards the magnetic field direction. The orientation degree was increased with the decreasing of grain size. The relation between orientation and grain size was analyzed from crystal orientation and migration theory.
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