Abstract
Different from the previous report that liquid droplets nucleated within the superheated solid phases during thermal stabilization, the nucleation of liquid droplets at the solid primary α-solid peritectic β interface was observed in a Sn–Ni peritectic alloy. Then, liquid migration by temperature gradient zone melting (TGZM) was observed. The nucleation interval of liquid droplets at the same nucleation site is determined to be 42 seconds by investigating liquid migration through a diffusion-controlled analytical model.
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Acknowledgments
The authors appreciate the support from the National Natural Science Foundation of China (Grant No. 51871118), the fund of Science and Technology Project of Lanzhou City (Grant No. 2019-1-30), and the fund of State Key Laboratory of Special Rare Metal Materials (Grant No. SKL2020K003).
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Manuscript submitted December 24 2020; accepted March 27, 2021.
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Peng, P., Zhang, A., Li, S. et al. New Nucleation Mechanism of the Liquid Droplet at the Solid–Solid Interface During Initial Thermal Stabilization Stage of Directional Solidification. Metall Mater Trans A 52, 2691–2697 (2021). https://doi.org/10.1007/s11661-021-06271-z
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DOI: https://doi.org/10.1007/s11661-021-06271-z