Simulation of atypical dendrite growth in Ni-Cu binary alloy with phase-field method

doi:10.1166/jctn.2012.2232

	Simulation of atypical dendrite growth in Ni-Cu binary alloy with phase-field method
	Xiao, Rongzhen; Wang, Zhiping; Zhu, Changsheng; Feng, Li
	2012-09-01
关键词	Binary alloys Computer simulation Interface states Kinetics Morphology Phase transitions C programming Concentration profiles Dendrite growth Dendrite morphology Dendritic morphology Gradient terms Growth patterns Interface kinetics Operating state Phase field methods Phase fields Phase-field models Phase-field simulation Solute distribution Solute field Solute trapping Tip velocity Uniform grids
卷号	9
期号	9
DOI	10.1166/jctn.2012.2232
页码	1495-1499
英文摘要	Two dimensional non-facet formations during 〈110〉 dendrites growth of Ni-Cu binary alloy are simulated with a phase-field model. The gradient terms for both phase field and solute field are considered in the model. The finite difference method is adopted with uniform grid, and the C Programming Code is implemented to complete the phase-field simulation. We focus on effect of the interface kinetics coefficient on dendritic morphology, tip operating state and concentration profile across the liquid.solid interface. The simulation results indicate that the symmetry of crystal growth does not depend on the kinetics coefficient without flow. With increasing of kinetics coefficient, the steady-state dendrite tip velocities increase accordingly, and the level of solute trapping is severe. The crystal growth patterns are formed including a sector form and a plate formation, but the symmetry of dendrite morphology is not disrupted. Copyright © 2012 American Scientific Publishers All rights reserved.
会议录	Journal of Computational and Theoretical Nanoscience
会议录出版者	American Scientific Publishers, 25650 North Lewis Way, Stevenson Ranch, California, 91381-1439, United States
语种	英语
ISSN号	15461955
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS记录号	WOS:000309495900076
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/116021]
专题	材料科学与工程学院计算机与通信学院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	State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Xiao, Rongzhen,Wang, Zhiping,Zhu, Changsheng,et al. Simulation of atypical dendrite growth in Ni-Cu binary alloy with phase-field method[C]. 见:.