Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2010, Vol. 31 ›› Issue (9): 1278-1282.DOI: -

• OriginalPaper • Previous Articles     Next Articles

Effect of magnetic field on the morphology and distribution of Al3Fe phase in hypereutectic Al-Fe alloy

Ban, Chun-Yan (1); Han, Yi (1); Ba, Qi-Xian (1); Cui, Jian-Zhong (1)   

  1. (1) Key Laboratory of Electromagnetic Processing of Materials, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-09-15 Published:2013-06-20
  • Contact: Ban, C.-Y.
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Abstract: The changes in the morphology and distribution of the primary Al3Fe phase in Al-2.89%Fe alloy solidified in an AC magnetic field (0.3 T) and a high-intenisy DC magnetic field (12 T) were investigated. The results showed that the majority of primary Al3Fe phase is deposited on the sample bottom when the alloy solidified in or out of AC magnetic field. The Al3Fe phase was refined and accumulated towards the sample center to form a pyramid-like distribution in AC magnetic field. But, when the alloy solidified in a high magnetic field (12 T), the Al3Fe phase is distributed uniformly in the whole sample because the magnetic force acted on it was balanced with the gravity force. Furthermore the Al3Fe phase aligned perpendicularly to the magnetic field direction with a preferred direction [121]. The functional mechanism of the magnetic field was discussed.

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