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

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

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.

Original language	English
Pages (from-to)	146-152
Number of pages	7
Journal	Journal of Crystal Growth
Volume	334
Issue number	1
DOIs	https://doi.org/10.1016/j.jcrysgro.2011.08.027
State	Published - 1 Nov 2011

Keywords

A1. Computer simulation
A1. Growth models
A1. Morphological stability
A1. Solidification

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10.1016/j.jcrysgro.2011.08.027

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title = "Three-dimensional phase-field crystal modeling of fcc and bcc dendritic crystal growth",

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

Y1 - 2011/11/1

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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M3 - 文章

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VL - 334

SP - 146

EP - 152

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

IS - 1

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

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Keywords

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