Three-dimensional phase-field crystal modeling of fcc and bcc dendritic crystal growth

Sai Tang; Rainer Backofen; Jincheng Wang; Yaohe Zhou; Axel Voigt; Yan Mei Yu

doi:10.1016/j.jcrysgro.2011.08.027

Three-dimensional phase-field crystal modeling of fcc and bcc dendritic crystal growth

Sai Tang, Rainer Backofen, Jincheng Wang, Yaohe Zhou, Axel Voigt, Yan Mei Yu

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

43 引用（Scopus）

摘要

By using the phase-field crystal model (PFC), we simulate dendritic growth of face-centered cubic and body-centered cubic structures. The anisotropy of the dendritic growth velocity coefficient C and the growth dynamic scaling exponent n′ are investigated as function of the PFC number density in the liquid phase ψ. We obtain the stability criterion of the operating state of the PFC dendrite tip, which is about 0.278 (fcc) and 0.104 (bcc), being larger than 0.025 predicted for the macroscopic dendritic growth. This disagreement is caused by the strongly faceted growth in the regime of large anisotropy of the PFC surface energy.

源语言	英语
页（从-至）	146-152
页数	7
期刊	Journal of Crystal Growth
卷	334
期	1
DOI	https://doi.org/10.1016/j.jcrysgro.2011.08.027
出版状态	已出版 - 1 11月 2011

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abstract = "By using the phase-field crystal model (PFC), we simulate dendritic growth of face-centered cubic and body-centered cubic structures. The anisotropy of the dendritic growth velocity coefficient C and the growth dynamic scaling exponent n′ are investigated as function of the PFC number density in the liquid phase ψ. We obtain the stability criterion of the operating state of the PFC dendrite tip, which is about 0.278 (fcc) and 0.104 (bcc), being larger than 0.025 predicted for the macroscopic dendritic growth. This disagreement is caused by the strongly faceted growth in the regime of large anisotropy of the PFC surface energy.",

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T1 - Three-dimensional phase-field crystal modeling of fcc and bcc dendritic crystal growth

AU - Tang, Sai

AU - Backofen, Rainer

AU - Wang, Jincheng

AU - Zhou, Yaohe

AU - Voigt, Axel

AU - Yu, Yan Mei

PY - 2011/11/1

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N2 - By using the phase-field crystal model (PFC), we simulate dendritic growth of face-centered cubic and body-centered cubic structures. The anisotropy of the dendritic growth velocity coefficient C and the growth dynamic scaling exponent n′ are investigated as function of the PFC number density in the liquid phase ψ. We obtain the stability criterion of the operating state of the PFC dendrite tip, which is about 0.278 (fcc) and 0.104 (bcc), being larger than 0.025 predicted for the macroscopic dendritic growth. This disagreement is caused by the strongly faceted growth in the regime of large anisotropy of the PFC surface energy.

AB - By using the phase-field crystal model (PFC), we simulate dendritic growth of face-centered cubic and body-centered cubic structures. The anisotropy of the dendritic growth velocity coefficient C and the growth dynamic scaling exponent n′ are investigated as function of the PFC number density in the liquid phase ψ. We obtain the stability criterion of the operating state of the PFC dendrite tip, which is about 0.278 (fcc) and 0.104 (bcc), being larger than 0.025 predicted for the macroscopic dendritic growth. This disagreement is caused by the strongly faceted growth in the regime of large anisotropy of the PFC surface energy.

KW - A1. Computer simulation

KW - A1. Growth models

KW - A1. Morphological stability

KW - A1. Solidification

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Three-dimensional phase-field crystal modeling of fcc and bcc dendritic crystal growth

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