研究锰添加对工业用Al-Si-Cu-Fe合金中富铁金属间化合物形成和析出的影响。发现在液固相温度之间经过固态富铁相的析出后,锰的加入是一种有效降低平衡液相中铁含量的方法。高的m(Mn)/m(Fe)质量比会降低实验合金中的铁含量,在此过程中锰被消耗,并且作为固态富铁金属间化合物沉积在熔体金属的底部。因此,合金中的最终Fe含量可以用锰含量和保温温度来控制。这些结果验证了专门设计的50 mm圆柱铸件的理论计算和实验测试的一致性。在600°C时,Al-Si-Cu-Fe合金中的富铁金属间化合物10 min后全部析出。与原始合金相比,当m(Mn)/m(Fe)质量比为0.5和1.0时,基体中的铁含量分别降低31.4%和53.5%。富铁金属间化合物为α-Al15(Fe,Mn)3Si2,与其他富铁金属间化合物相比,这种相可以提供较低的平衡铁浓度。 The effect of manganese addition on the formation and precipitation of iron-rich intermetallics in industrial Al-Si-Cu-Fe alloys was investigated. It was found that the addition of manganese was an effective method to reduce the iron content in the equilibrium liquid phase after the precipitation of solid iron-rich phase between the liquid and solid phases. A high mass ratio of m (Mn) / m (Fe) reduces the iron content of the experimental alloy during which manganese is consumed and deposited as a solid iron-rich intermetallic compound at the bottom of the molten metal. Therefore, the final Fe content in the alloy can be controlled by the manganese content and holding temperature. These results validate the theoretical calculations and experimental test conformance of a specially designed 50 mm cylindrical casting. At 600 ° C, Al-Si-Cu-Fe alloy iron-rich intermetallic compounds after 10 min precipitation. Compared with the original alloy, the iron content in the matrix decreases by 31.4% and 53.5% respectively when the mass ratio of m (Mn) / m (Fe) is 0.5 and 1.0. The iron-rich intermetallic compound is α-Al15 (Fe, Mn) 3Si2, which provides a lower equilibrium iron concentration than other iron-rich intermetallics.