Mg对铸造Al-10%Fe合金初生富铁相形貌的影响

EFFECT OF Mg ON THE MORPHOLOGY OF PRIMARY Al_3Fe PHASEIN Al-10%Fe CASTING ALLOY

研究了Mg元素对铸造A1-10％Fe过共晶合金初生Al_3Fe相形态的影响。研究发现,加入Mg对初生Al_3Fe相生长产生影响,由原来的发达针状向树枝状→小针(片)状、不规则块状转变。对Mg元素的影响机理做了分析。

The effect of Mg on the morphology of primary Al3Fe phase in hypereutectic Al-10%Fe casting alloy is investigated. It is shown that the morphology of primary Al3Fe phase is changed from coarse needle-like to branch-like, finally to fine needle(plate)-like or irregular chunk-like with addition of Mg element.