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Reduced iron powder applied in aluminum alloy iron additive

The role of iron in aluminum alloy:
Iron is added as alloying element in Al-Cu-Mg-Ni-Fe system wrought aluminum alloy, silicon is added as alloying element in Al-Mg-Si system wrought aluminum alloy and in Al-Si system electrode and al-silicon casting alloy. In aluminum alloy, silicon and iron are common impurity elements, which have obvious influence on the properties of the alloy. They mainly exist in FeCl3 and free silicon When silicon is larger than iron, β -FesiAl3 (or Fe2Si2Al9) phase is formed, and when iron is larger than silicon, α-Fe2SiAl8(or Fe3Si2Al12) phase is formed. When the ratio of iron to silicon is not appropriate, cracks will occur in the casting, and when the iron content in the cast aluminum is too high, the casting brittleness will occur.

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