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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
Source PublicationCOMPUTATIONAL MATERIALS SCIENCE
ISSN0927-0256
Volume104Pages:155-161
AbstractAs 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.
description.department[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
KeywordPhase-field Front-tracking Polycrystalline Growth Alloy Solidification
Funding OrganizationNational Natural Science Foundation for Young Scientists of China [51401223]; National Natural Science Foundation of China [51271184]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74601
Collection中国科学院金属研究所
Corresponding Authordzli@imr.ac.cn
Recommended Citation
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.
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