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 Al3Fe crystals mainly show bar-like form, whereas the unmelted Al3Zr crystals reveal tabular and the newly crystallized primary Al3Zr crystals have fine/coarse needle-like forms. When a 12 T magnetic field is applied, the primary Al3Fe crystals are distributed homogenously and the fine needle-like primary Al3Zr levitated. Moreover, the primary Al3Fe crystals align horizontally in the upper but vertically in the lower part of the specimen. The needle-like primary Al3Zr 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 Al3Fe and the Al3Zr crystals with respect to the magnetic field, respectively. The redistribution and realignments of the crystals are discussed.
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ACKNOWLEDGMENTS
This work was supported by the Fundamental Research Funds for the Central Universities (N150904003), the Liaoning Provincial Natural Science Foundation of China (2015021002), the China Postdoctoral Science Foundation (2015M570250), the Northeastern University Postdoctoral Science Foundation (20150202), the National Natural Science Foundation of China (51201029, 51574075, and 51374067), the National Program on Key Research Project (2016YFB0300901), and the Science and Technology Program of Guangzhou, China (2015B090926013).
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Li, L., Ban, C., Shi, X. et al. Influence of a high magnetic field on the solidification structures of ternary Al–Fe–Zr alloy. Journal of Materials Research 32, 2035–2044 (2017). https://doi.org/10.1557/jmr.2017.24
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DOI: https://doi.org/10.1557/jmr.2017.24