Effects of different magnetic field intensity

pouring temperature and mold pre-heating temperature on solidification microstructure of Al-5Fe alloy were investigated by a self-developed pulsed magnetic field apparatus. The results show that solidification structure of Al-5Fe alloy can be refined effectively by controlling parameters of pulsed magnetic field and solidification conditions. Al3Fe phase is transformed from long coarse strip to fine acicula structurer. With the increase of pulse voltage in the range of 0～210 V

Al3Fe phase is refined gradually. In the range of 800 ℃～890 ℃

with the increase of pouring temperature

Al3Fe phase is refined firstly and then coarsened under magnetic field

and the desirable refinement of Al3Fe can be observed with pouring temperature of 860 ℃. With the increase of the mould temperature in the range of 200 ℃～800 ℃

Al3Fe phase is refined gradually with magnetic field treatment.