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

doi:10.1007/s11771-015-2593-8

	Simulation of facet dendrite growth with strong interfacial energy anisotropy by phase field method
	Yuan Xun-feng 1,2; Liu Bao-ying 1; Li Chun 2; Zhou Chun-sheng 2; Ding Yu-tian3
	2015-03-01
发表期刊	Journal of Central South University
ISSN	20952899
卷号	22 期号:3 页码:855-861
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.
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
DOI	10.1007/s11771-015-2593-8
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000351290200010
出版者	Central South University of Technology
EI入藏号	20151200651821
EI主题词	Crystal symmetry
EI分类号	412.1 Cement ; 641.1 Thermodynamics ; 931.2 Physical Properties of Gases, Liquids and Solids ; 933.1 Crystalline Solids ; 933.1.1 Crystal Lattice
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://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
通讯作者	Yuan Xun-feng
作者单位	1.Shangluo Univ, Sch Elect Informat & Elect Engn, Shangluo 726000, Peoples R China; 2.Shangluo Univ, Shaanxi Key Lab Comprehens Utilizat Tailing Resou, Shangluo 726000, Peoples R China; 3.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R 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.