Numerical study of growth competition between twin grains during directional solidification by using multi-phase field method

doi:10.1088/1674-1056/ac0eed

	Numerical study of growth competition between twin grains during directional solidification by using multi-phase field method
	Zhu, Chang-Sheng 1,2; Wang, Ting 1; Feng, Li 2; Lei, Peng 1; Ma, Fang-Lan 1
刊名	CHINESE PHYSICS B
	2022
卷号	31 期号:2
关键词	multi-phase field simulation grain growth competition directional solidification twin grains
ISSN号	1674-1056
DOI	10.1088/1674-1056/ac0eed
英文摘要	A multi-phase field model is established to simulate the growth competition and evolution behavior between seaweed and columnar dendrites during directional solidification. According to the effects of surface tension and interfacial energy, we quantitatively analyze the influences of factors such as inclination angles, pulling velocity, and anisotropic strength on twin growth. The results demonstrate that the pulling velocity and anisotropic strength have an important influence on the morphology and evolution of the seaweed and dendritic growth. The low pulling velocity and anisotropic strength are both key parameters for maintaining the stable morphology of seaweed during competitive growth in a bicrystal, showing that the lateral branching behavior is the root of the dendrites that can ultimately dominate the growth. And it is clarified that the lateral branching behavior and lateral blocking are the root causes of the final dominant growth of dendrites. With the increase of anisotropy strength, the seaweed is eliminated fastest in case 1, the seaweed is transformed into degenerate dendritic morphology, and eliminates the seaweed by promoting the generation and lateral growth of the lateral branches of the dendrites. The increase of pulling velocity is to increase the undercooling of favorable oriented grain and accelerate the growth rate of dendrites, thus producing more new primary dendrites for lateral expansion and accelerating the elimination rate of unfavorable oriented grain.
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000746972800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154891]
专题	计算机与通信学院材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, Sch Comp & Commun, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Gansu Adv Proc & Recycling Nonferro, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Chang-Sheng,Wang, Ting,Feng, Li,et al. Numerical study of growth competition between twin grains during directional solidification by using multi-phase field method[J]. CHINESE PHYSICS B,2022,31(2).
APA	Zhu, Chang-Sheng,Wang, Ting,Feng, Li,Lei, Peng,&Ma, Fang-Lan.(2022).Numerical study of growth competition between twin grains during directional solidification by using multi-phase field method.CHINESE PHYSICS B,31(2).
MLA	Zhu, Chang-Sheng,et al."Numerical study of growth competition between twin grains during directional solidification by using multi-phase field method".CHINESE PHYSICS B 31.2(2022).