Research on phase-field model of three-dimensional dendritic growth for binary alloy

doi:10.1166/jctn.2015.4353

	Research on phase-field model of three-dimensional dendritic growth for binary alloy
	Feng, Li 1,2; Jia, Jinfang 2; Zhu, Changsheng 2; Lu, Yang 1,2; Xiao, Rongzhen 1,2; Wang, Zhiping 1
刊名	Journal of Computational and Theoretical Nanoscience
	2015-11-01
卷号	12 期号:11 页码:4289-4296
关键词	Anisotropy Binary alloys Bins Copper alloys Free energy Phase transitions Dendritic growth Independent variables Interfacial free energy Optimal growth Phase field methods Single phase system Solid-liquid interfaces Three dimensional simulations
ISSN号	15461955
DOI	10.1166/jctn.2015.4353
英文摘要	Based on the three-dimensional phase-field model (KKS model) of single-phase system and pure diffusion dendritic growth for binary alloy, the normal vector of dendritic solid-liquid interface migration direction is employed as an independent variable to describe phase-field governing function and interfacial free energy anisotropy equation, and the angle between the normal direction of dendritic growth interface migration and the optimal growth direction is used to describe interfacial free energy anisotropy function, and the purpose is to improve phase-field model. Taking Al-Cu binary alloy for example, the three-dimensional dendritic growth with different growth orientations and the dendritic tip growth velocities under different undercoolings are simulated. The simulation results are compared with the KKS model's simulation results and the predicted results of the classical solidification theory (LKT (BCT) theory). The results show that the simulation results agree well with the theoretical prediction results. The definitional domains of three angle variables in the interfacial free energy anisotropy function used this paper research are the same and there is a one-to-one relationship among them, and then the numerical simulation of solid-liquid interface evolution about different grains' common growth with different optimal growth orientations is realized. © 2015 American Scientific Publishers.
语种	英语
出版者	American Scientific Publishers
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113110]
专题	材料科学与工程学院计算机与通信学院
作者单位	1.State Key Laboratory of Gansu Advanced Processing and Recycling of Non-Ferrous Metal, Lanzhou; 730050, China 2.College of Materials and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Feng, Li,Jia, Jinfang,Zhu, Changsheng,et al. Research on phase-field model of three-dimensional dendritic growth for binary alloy[J]. Journal of Computational and Theoretical Nanoscience,2015,12(11):4289-4296.
APA	Feng, Li,Jia, Jinfang,Zhu, Changsheng,Lu, Yang,Xiao, Rongzhen,&Wang, Zhiping.(2015).Research on phase-field model of three-dimensional dendritic growth for binary alloy.Journal of Computational and Theoretical Nanoscience,12(11),4289-4296.
MLA	Feng, Li,et al."Research on phase-field model of three-dimensional dendritic growth for binary alloy".Journal of Computational and Theoretical Nanoscience 12.11(2015):4289-4296.