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研究了强磁场对Al-4%Cu合金时效析出的影响,采用显微硬度测试、X射线衍射以及电子探针等手段研究了材料的组织及性能。结果表明:在其他条件相同情况下,强磁场提高了材料的硬度,缩短了时效析出时间并且增加了晶界析出相的数量。强磁场作用于相变时引起的时效转变扩散系数的增加是以上变化的主要原因之一。同时,结果也表明在强磁场下时效析出时基体晶粒度、脱溶相形状及其排列方式无明显变化。
The effect of high magnetic field on the aging precipitation of Al-4% Cu alloy was studied. The microstructure and properties of the alloy were studied by microhardness test, X-ray diffraction and electron probe. The results show that under the same conditions, the strong magnetic field increases the hardness of the material, shortens the aging time and increases the number of precipitates in the grain boundary. Aging caused by strong magnetic field changes caused by the aging of the diffusion coefficient is one of the main reasons for the above changes. At the same time, the results also show that there is no obvious change in the grain size, the shape of the desolvated phase and the arrangement of the matrix during the aging precipitation under the strong magnetic field.