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The effects of alloying elements,electromagnetic stirring,reheating and semi-solid formation on the microstructure and mechanical properties of Al-Fe alloys prepared by semi-solid formation were studied.It was found that alloying elements and electromagnetic stirring can alter the morphology and growth mode of the ironrich phase in Al-Fe alloys; and effectively refine the primary Al3Fe phase.In contrast to the microstructure obtained in conventional casting,the Al3Fe phase becomes thin short rod-like instead of thick needle-like; and the dendritic grain structure almost disappears in the semi-solid formation.The Al3Fe phase can be further refined through being dissolved or fused during subsequent reheating.It was also found that the larger extrusion ratio of semi-solid formation causes a greater crushing effect and therefore the Al3Fe phase is more refined and has more uniform distribution.Moreover,Al-Fe alloys prepared by semi-solid formation exhibit excellent mechanical properties at both room and high temperatures.