Influence of a high magnetic field on the solidification structures of ternary Al–Fe–Zr alloy. Issue 11 (6th February 2017) - Li, Lei
Abstract: Abstract : The effects of high magnetic fields on the solidification structures of ternary Al–Fe–Zr alloy were investigated. The results showed that the primary Al3 Fe crystals mainly show bar-like form, whereas the unmelted Al3 Zr crystals reveal tabular and the newly crystallized primary Al3 Zr crystals have fine/coarse needle-like forms. When a 12 T magnetic field is applied, the primary Al3 Fe crystals are distributed homogenously and the fine needle-like primary Al3 Zr levitated. Moreover, the primary Al3 Fe crystals align horizontally in the upper but vertically in the lower part of the specimen. The needle-like primary Al3 Zr crystals align vertically, whereas the tabular ones have their two opposite corners on the large surfaces toward the positive and negative magnetic field direction. Crystallographic analysis indicates that 〈100〉 and 〈110〉 are the preferred axes of the primary Al3 Fe and the Al3 Zr crystals with respect to the magnetic field, respectively. The redistribution and realignments of the crystals are discussed.