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Quantitative Phase-field Simulation of Dendritic Equiaxed Growth and Comparison with in Situ Observation on Al-4 wt.% Cu Alloy by Means of Synchrotron X-ray Radiography
Y. Chen; D. Z. Li; B. Billia; H. Nguyen-Thi; X. B. Qi; N. M. Xiao
2014
Source PublicationIsij International
ISSN0915-1559
Volume54Issue:2Pages:445-451
AbstractDendritic equiaxed growth from the melt by continuous cooling-down is investigated by quantitative 2D phase-field simulations. The results are compared with detailed data from solidification experiments on Al-4 wt.% Cu alloy with in situ X-ray monitoring. In a first step, the simulation of an isolated equiaxed alloy dendrite growing freely in <100>-direction in the melt is performed. Then, the impingement between two grains is considered by simulating two dendritic crystals growing towards each other in <100>-direction. From the phase-field simulations, the time evolution of the equiaxed crystals is characterized by measuring the lengths and tip velocities of the primary dendrite arms in free growth and in the presence of neighbor interaction, which enables the analysis of growth dynamics. In a second part, the results of the phase-field simulations are compared to data extracted from an experiment on Al - 4 wt.% Cu alloys carried out at the European Synchrotron Radiation Facility (ESRF), with in situ and real-time characterization by means of X-ray radiography, and to analytical relationship for dendrite tip growth. The limitations of 2D-phase-field simulations to fully describe the dynamic formation and interaction of dendritic equiaxed grains are briefly discussed.
description.department[chen, yun ; li, dian zhong ; qi, xin bo ; xiao, na min] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [billia, bernard ; nguyen-thi, henri] aix marseille univ, im2np, f-13397 marseille 20, france. [billia, bernard ; nguyen-thi, henri] cnrs, umr 7334, im2np, f-13397 marseille, france. ; li, dz (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; dzli@imr.ac.cn
KeywordPhase-field Simulation Dendritic Equiaxed Growth Grain Interaction Solidification Alloy In Situ Synchrotron imagIng Directional Solidification Initial Transient Convection Anisotropy Interface
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72537
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Y. Chen,D. Z. Li,B. Billia,et al. Quantitative Phase-field Simulation of Dendritic Equiaxed Growth and Comparison with in Situ Observation on Al-4 wt.% Cu Alloy by Means of Synchrotron X-ray Radiography[J]. Isij International,2014,54(2):445-451.
APA Y. Chen,D. Z. Li,B. Billia,H. Nguyen-Thi,X. B. Qi,&N. M. Xiao.(2014).Quantitative Phase-field Simulation of Dendritic Equiaxed Growth and Comparison with in Situ Observation on Al-4 wt.% Cu Alloy by Means of Synchrotron X-ray Radiography.Isij International,54(2),445-451.
MLA Y. Chen,et al."Quantitative Phase-field Simulation of Dendritic Equiaxed Growth and Comparison with in Situ Observation on Al-4 wt.% Cu Alloy by Means of Synchrotron X-ray Radiography".Isij International 54.2(2014):445-451.
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