A quantitative phase-field model combining with front-tracking method for polycrystalline solidification of alloys

IMR OpenIR

	A quantitative phase-field model combining with front-tracking method for polycrystalline solidification of alloys
	Chen, Yun; Qi, Xin Bo; Li, Dian Zhong; Kang, Xiu Hong; Xiao, Na Min; dzli@imr.ac.cn
	2015
发表期刊	COMPUTATIONAL MATERIALS SCIENCE
ISSN	0927-0256
卷号	104 页码:155-161
摘要	As the orientation of an individual crystal is constant in solid and diffusive interface layer, a sharp interface model can be coupled to calculate the orientation in phase-field simulation of polycrystalline growth. Here, a two-dimensional phase-field model in combination with the front-tracking method is provided for simulating polycrystalline growth during solidification. In this model, the quantitative phase-field formulations for slow solidification of dilute binary alloys are employed to describe the dynamical evolution of diffusive solid-liquid interface while the front-tracking method is utilized to track the spatial dependent orientation of each grain. Because of the high computing efficiency that is resulted from only one order parameter used to depict the phase transformation during solidification, the model overcomes the disadvantage of reported phase-field approaches for polycrystalline growth. The built model was firstly solved to simulate a free equiaxed dendrite with different orientations growing from undercooled melt for benchmarking. The comparison results indicate that the model is able to compute the orientation exactly. Secondly, the model was extended to simulate the solidification with many equiaxed dendrites. The growth behaviors of the simulated crystals were characterized and analyzed, which demonstrate that the model is feasible to quantitatively and efficiently predict growth dynamics of crystals in a large number and scale during solidification of alloys. (C) 2015 Elsevier B.V. All rights reserved.
部门归属	[chen, yun ; qi, xin bo ; li, dian zhong ; kang, xiu hong ; xiao, na min] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词	Phase-field Front-tracking Polycrystalline Growth Alloy Solidification
资助者	National Natural Science Foundation for Young Scientists of China [51401223]; National Natural Science Foundation of China [51271184]
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74601
专题	中国科学院金属研究所
通讯作者	dzli@imr.ac.cn
推荐引用方式 GB/T 7714	Chen, Yun,Qi, Xin Bo,Li, Dian Zhong,et al. A quantitative phase-field model combining with front-tracking method for polycrystalline solidification of alloys[J]. COMPUTATIONAL MATERIALS SCIENCE,2015,104:155-161.
APA	Chen, Yun,Qi, Xin Bo,Li, Dian Zhong,Kang, Xiu Hong,Xiao, Na Min,&dzli@imr.ac.cn.(2015).A quantitative phase-field model combining with front-tracking method for polycrystalline solidification of alloys.COMPUTATIONAL MATERIALS SCIENCE,104,155-161.
MLA	Chen, Yun,et al."A quantitative phase-field model combining with front-tracking method for polycrystalline solidification of alloys".COMPUTATIONAL MATERIALS SCIENCE 104(2015):155-161.