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Distribution of alloying elements and the corresponding structural evolution of Mn–Sb alloys in high magnetic field gradients

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Abstract

The distribution of alloying elements and the corresponding structural evolution of Mn–Sb alloys in magnetic field gradients were investigated in detail. It was found that a high magnetic field gradient could control the distribution of solute element in the alloys during the solidification process and therefore resulted in the coexistence of both primary MnSb and Sb phases or the aggregation of the primary MnSb with a continuous change in morphology. The positions where these primary phases located depended on the direction of field gradient. The control of the solute element distribution by a high magnetic field gradient was realized through the magnetic buoyancy force that could drive the migration of Mn element in the melt, originating from the difference in the magnetic susceptibility between Mn and Sb. The effectiveness of this control depends on the alloy composition, specimen dimension, cooling rate, and BdB/dz value.

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Authors and Affiliations

  1. Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang, 110004, China

    Tie Liu, Qiang Wang, Ao Gao, Hongwei Zhang, Kai Wang & Jicheng He

  2. Department of Materials Science and Engineering, University of California at Berkeley, Berkeley, California, 94720, USA

    Qiang Wang

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  1. Tie Liu
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  2. Qiang Wang
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  3. Ao Gao
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  4. Hongwei Zhang
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  5. Kai Wang
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  6. Jicheng He
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Correspondence to Qiang Wang.

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Liu, T., Wang, Q., Gao, A. et al. Distribution of alloying elements and the corresponding structural evolution of Mn–Sb alloys in high magnetic field gradients. Journal of Materials Research 25, 1718–1727 (2010). https://doi.org/10.1557/JMR.2010.0226

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  • DOI: https://doi.org/10.1557/JMR.2010.0226

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