Abstract
The morphology and growth behavior of Al3Ni in the liquid Al/solid Ni interface were observed through synchrotron radiation. The formation time and mechanism of Al3Ni are connected with saturation of the molten layer. In unsaturated conditions, the growth of columnar Al3Ni formed during solidification governed by the melting of small grains accompanied by the growth of adjacent large grains and coalescence of grains near the tips. Conversely, the scallop-type Al3Ni formed in holding showed annexation of adjacent small grains with its morphology changing from scallop to hemisphere.
Notes
NOCOLOK is a trademark of Solvay Fluor GmbH.
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This work is supported by the National Key Research and Development Program (Grant No. 2017YFA0403800), National Natural Science Foundation of China (Grant Nos. 51374144, 51774201), Shanghai Municipal Natural Science Foundation (Grant No. 13ZR1420600), and Shanghai Rising-Star Program (Grant No. 14QA1402300). The support of synchrotron radiation phase-contrast imaging by the BL13W1 beam line of the SSRF is gratefully acknowledged.
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Manuscript submitted October 21, 2017.
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Ding, Z., Hu, Q., Lu, W. et al. In-Situ Observation on the Diversified Morphology and Growth Behavior of Al3Ni Phase at the Liquid Al/Solid Ni Interface. Metall Mater Trans A 49, 1486–1491 (2018). https://doi.org/10.1007/s11661-018-4537-z
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DOI: https://doi.org/10.1007/s11661-018-4537-z