Simulation of facet dendrite growth with strong interfacial energy anisotropy by phase field method

doi:10.1007/s11771-015-2593-8

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Simulation of facet dendrite growth with strong interfacial energy anisotropy by phase field method
	Yuan, Xun-Feng 1,3; Liu, Bao-Ying 3; Li, Chun 1; Zhou, Chun-Sheng 1; Ding, Yu-Tian 2
刊名	Journal of Central South University
	2015-03-01
卷号	22 期号:3 页码:855-861
关键词	Anisotropy Crystals Growth kinetics Interfacial energy Morphology Setting Undercooling Controlled diffusion Equilibrium morphology Facet dendrite Hcp Materials Hexagonal close packed Interfacial energy anisotropies Phase field methods Phase fields
ISSN号	20952899
DOI	10.1007/s11771-015-2593-8
英文摘要	Numerical simulations based on a new regularized phase-field model were presented, to simulate the solidification of hexagonal close-packed materials with strong interfacial energy anisotropies. Results show that the crystal grows into facet dendrites, displaying six-fold symmetry. The size of initial crystals has an effect on the branching-off of the principal branch tip along the 〈100〉 direction, which is eliminated by setting the b/a (a and b are the semi-major and semi-minor sizes in the initial elliptical crystals, respectively) value to be less than or equal to 1. With an increase in the undercooling value, the equilibrium morphology of the crystal changes from a star-like shape to facet dendrites without side branches. The steady-state tip velocity increases exponentially when the dimensionless undercooling is below the critical value. With a further increase in the undercooling value, the equilibrium morphology of the crystal grows into a developed side-branch structure, and the steady-state tip velocity of the facet dendrites increases linearly. The facet dendrite growth has controlled diffusion and kinetics. © 2015, Central South University Press and Springer-Verlag Berlin Heidelberg.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	Central South University of Technology
WOS记录号	WOS:000351290200010
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150400]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.Shaanxi Key Laboratory of Comprehensive Utilization of Tailing Resources, Shangluo University, Shangluo; 726000, China; 2.State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou; 730050, China 3.School of Electronic Information and Electrical Engineering, Shangluo University, Shangluo; 726000, China;
推荐引用方式 GB/T 7714	Yuan, Xun-Feng,Liu, Bao-Ying,Li, Chun,et al. Simulation of facet dendrite growth with strong interfacial energy anisotropy by phase field method[J]. Journal of Central South University,2015,22(3):855-861.
APA	Yuan, Xun-Feng,Liu, Bao-Ying,Li, Chun,Zhou, Chun-Sheng,&Ding, Yu-Tian.(2015).Simulation of facet dendrite growth with strong interfacial energy anisotropy by phase field method.Journal of Central South University,22(3),855-861.
MLA	Yuan, Xun-Feng,et al."Simulation of facet dendrite growth with strong interfacial energy anisotropy by phase field method".Journal of Central South University 22.3(2015):855-861.