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 1,2; Liu Bao-ying 2; Li Chun 1; Zhou Chun-sheng 1; Ding Yu-tian 3
刊名	JOURNAL OF CENTRAL SOUTH UNIVERSITY
	2015-03
卷号	22 期号:3 页码:855-861
关键词	phase field facet dendrite hcp materials interfacial energy anisotropy dimensionless undercooling
ISSN号	2095-2899
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.
资助项目	Scientific Research Program of Shaanxi Provincial Education Department, China[14JK1223]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY
WOS记录号	WOS:000351290200010
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/34107]
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材料科学与工程学院
通讯作者	Yuan Xun-feng
作者单位	1.Shangluo Univ, Shaanxi Key Lab Comprehens Utilizat Tailing Resou, Shangluo 726000, Peoples R China 2.Shangluo Univ, Sch Elect Informat & Elect Engn, 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.