Iron powder is used as an iron additive for aluminum alloys

Iron in Al - Cu - Mg - Ni - Fe in the forging of aluminum alloy, silicon in Al - Mg - Si is wrought aluminium and in Al - Si electrode and aluminum silicon alloy casting, all of the alloy elements and in the aluminum alloy, silicon and iron is a common impurity elements, have obvious influence on performance of alloy They mainly exist in FeCl3 and free silicon Formed in the silicon than iron, beta FeSiAl3 (or Fe2Si2Al9) phase, while the iron is greater than the silicon to form alpha Fe2SiAl8 (or Fe3Si2Al12)When the ratio of iron and silicon is not at the time, the casting will cause cracks, and the cast aluminum will produce brittleness when the iron content is too high.