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3D phase field modeling of multi-dendrites evolution in solidification and validation by synchrotron x-ray tomography

Wang, Shuo; Guo, Zhipeng; Kang, Jinwu; Zou, Meishuai; Li, Xiaodong; Zhang, Ang; Du, Wenjia; Zhang, Wei; Lee, Tung Lik; Xiong, Shoumei; Mi, Jiawei

Authors

Shuo Wang

Zhipeng Guo

Jinwu Kang

Meishuai Zou

Xiaodong Li

Ang Zhang

Wenjia Du

Wei Zhang

Tung Lik Lee

Shoumei Xiong



Abstract

© 2021 by the authors. Licensee MDPI, Basel, Switzerland. In this paper, the dynamics of multi-dendrite concurrent growth and coarsening of an Al-15 wt.% Cu alloy was studied using a highly computationally efficient 3D phase field model and real-time synchrotron X-ray micro-tomography. High fidelity multi-dendrite simulations were achieved and the results were compared directly with the time-evolved tomography datasets to quantify the relative importance of multi-dendritic growth and coarsening. Coarsening mechanisms under different solidification conditions were further elucidated. The dominant coarsening mechanisms change from small arm melting and interdendritic groove advancement to coalescence when the solid volume fraction approaches ~0.70. Both tomography experiments and phase field simulations indicated that multi-dendrite coarsening obeys the classical Lifshitz–Slyozov–Wagner theory Rn − Rn0=kc(t − t0), but with a higher constant of n = 4.3.

Citation

Wang, S., Guo, Z., Kang, J., Zou, M., Li, X., Zhang, A., …Mi, J. (2021). 3D phase field modeling of multi-dendrites evolution in solidification and validation by synchrotron x-ray tomography. Materials, 14(3), Article 520. https://doi.org/10.3390/ma14030520

Journal Article Type Article
Acceptance Date Jan 16, 2021
Online Publication Date Jan 21, 2021
Publication Date Feb 1, 2021
Deposit Date Apr 11, 2022
Publicly Available Date Apr 11, 2022
Journal Materials
Electronic ISSN 1996-1944
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 14
Issue 3
Article Number 520
DOI https://doi.org/10.3390/ma14030520
Keywords Phase field modeling; Dendrite evolution; Solidification; Synchrotron X-ray tomography
Public URL https://hull-repository.worktribe.com/output/3710928

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http://creativecommons.org/licenses/by/4.0

Copyright Statement
Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).







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