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本文研究了4004铝合金在不同物理场作用下初生α-Al和共晶硅的形貌特征.不同物理场主要包括超声场、电磁场、超声和电磁复合场.实验结果表明,单独应用超声或电磁场情况下,铸锭的凝固组织都达到了细化效果.特别是功率超声场,可以细化铝合金中的共晶硅相.当施加超声和电磁复合场时,初生α-Al相和共晶硅相都得到细化,细化程度与同等条件下施加功率超声场的细化效果几乎等同,但是,复合场处理的铸锭细化区域明显得到扩大.
In this paper, the morphologies of primary α-Al and eutectic silicon in 4004 aluminum alloy under different physical fields were studied.The different physical fields mainly include the ultrasonic field, electromagnetic field, ultrasonic and electromagnetic compound field.The experimental results show that ultrasonic or electromagnetic field In the case, the ingot solidified microstructure has reached the refinement effect, especially the power ultrasonic field, can refine the eutectic silicon phase in the aluminum alloy.When the ultrasonic and electromagnetic composite field is applied, the primary α-Al phase and the eutectic The silicon phase is refined, and the degree of refinement is almost the same as that of the ultrasonic field applied power under the same conditions. However, the refinement area of the ingot treated by the composite field is obviously enlarged.