Phase-field model simulations of alloy directional solidification and seaweed-like microstructure evolution based on adaptive finite element method

doi:10.1016/j.commatsci.2018.12.058

	Phase-field model simulations of alloy directional solidification and seaweed-like microstructure evolution based on adaptive finite element method
	Zhu, Chang-Sheng 1,2; Xu, Sheng 1; Feng, Li 2; Han, Dan 1; Wang, Kai-Ming 1
刊名	COMPUTATIONAL MATERIALS SCIENCE
	2019-04
卷号	160 页码:53-61
关键词	Al-4wt.%Cu alloy Phase-field modeling Adaptive finite element Seaweed tissue
ISSN号	0927-0256
DOI	10.1016/j.commatsci.2018.12.058
英文摘要	Based on the multi-grain growth phase field model of multi-element single-phase system, the adaptive finite element method using non-uniform grid is studied to solve the problem. The Al-4wt.%Cu binary alloy is taken as an example to study the planar solidification process and morphological evolution during the initial transition phase of solidification were studied under the condition of large computational domain and thin interfacial layer thickness. The effects of disturbance and anisotropy intensity on the microstructure of the solidification, the influence of physical parameters such as temperature gradient and cooling rate on the interface morphology growth and evolution were quantitatively analyzed. The growth mechanism of the interface morphology during directional solidification and the transformation mechanism of seaweed tissue were discussed. The results show that under the condition of low temperature gradient and high cooling rate, the flat interface is unstable and forms cell or dendrites, and then the tip is continuously split to form seaweed structure morphology. The adaptive finite element method is one order of magnitude lower in computing time and storage space comparing to the finite difference method. When the system size is larger, the superiority of the adaptive finite element method can be better reflected, which facilitates the simulation of the large-scale multi-field coupled phase field model.
资助项目	National Natural Science Foundation of China[51661020][11504149][11364024] ; Postdoctoral Science Foundation of China[2014M560371] ; Funds for Distinguished Young Scientists of Lanzhou University of Technology, China[J201304]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000459825600006
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31993]
专题	材料科学与工程学院计算机与通信学院
作者单位	1.Lanzhou Univ Technol, Coll Comp & Commun, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Gansu Adv Proc & Recycling Nonferro, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Chang-Sheng,Xu, Sheng,Feng, Li,et al. Phase-field model simulations of alloy directional solidification and seaweed-like microstructure evolution based on adaptive finite element method[J]. COMPUTATIONAL MATERIALS SCIENCE,2019,160:53-61.
APA	Zhu, Chang-Sheng,Xu, Sheng,Feng, Li,Han, Dan,&Wang, Kai-Ming.(2019).Phase-field model simulations of alloy directional solidification and seaweed-like microstructure evolution based on adaptive finite element method.COMPUTATIONAL MATERIALS SCIENCE,160,53-61.
MLA	Zhu, Chang-Sheng,et al."Phase-field model simulations of alloy directional solidification and seaweed-like microstructure evolution based on adaptive finite element method".COMPUTATIONAL MATERIALS SCIENCE 160(2019):53-61.