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Solid/Liquid Interfacial Energy of Mg-Al Alloys

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Abstract

The variation of solid–liquid interfacial energy (σ) for Mg–Al binary alloys was investigated as a function of Al content (3, 6, and 9 wt pct) based on the microstructure analysis of directional solidified Mg alloys. Primary dendrite arm spacing was measured from the directionally solidified alloys and used in Kurz and Fisher’s and Trivedi’s relations to calculate the value of σ. The calculated results reveal that the increasing Al content in Mg can significantly decrease the interfacial energy, which indicates a possible high adsorption tendency of Al at the solid/liquid interface.

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This research was supported by funding from the NSERC Magnesium Strategic Research Network and Strategic Network Enhancement Initiative program. In addition, the authors wish to thank Prof. Youn-Bae Kang for usage of the solidification experimental equipment in GIFT, Postech, South Korea.

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Authors and Affiliations

  1. Department of Mining and Materials Engineering, McGill University, 3610 University Street, Montreal, H3A 2B2, QC, Canada

    Manas Paliwal (Ph.D. Student) & In-Ho Jung (Professor)

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  1. Manas Paliwal
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  2. In-Ho Jung
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Correspondence to In-Ho Jung.

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Manuscript submitted July 27, 2012.

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Paliwal, M., Jung, IH. Solid/Liquid Interfacial Energy of Mg-Al Alloys. Metall Mater Trans A 44, 1636–1640 (2013). https://doi.org/10.1007/s11661-013-1623-0

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