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Metallurgical and Materials Transactions B
Published in: Metallurgical and Materials Transactions B 5/2017

01-08-2017

Effect of Solute Diffusion on Dendrite Growth in the Molten Pool of Al-Cu Alloy

Authors: Xiaohong Zhan, Cheng Gu, Yun Liu, Yanhong Wei

Published in: Metallurgical and Materials Transactions B | Issue 5/2017

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Abstract

A cellular automaton (CA)–finite difference model is developed to simulate dendrite growth and solute diffusion during solidification process in the molten pool of Al-Cu alloy. In order to explain the interaction between the dendritic growth and solute distribution, a series of CA simulations with different solute diffusion velocity coefficients are carried out. It is concluded that the solute concentration increases with dendrite growing and solute accumulation in the dendrite tip. Converged value of the dendrite tip growth velocity is about 480 μm/s if the mesh size is refined to 2 μm or less. Growth of the primary dendrite and the secondary dendrite is mainly influenced by solute diffusion at the dendrite tips. And growth of secondary and tertiary dendrites is mainly influenced by solute diffusion at interdendrite.
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Metadata
Title
Effect of Solute Diffusion on Dendrite Growth in the Molten Pool of Al-Cu Alloy
Authors
Xiaohong Zhan
Cheng Gu
Yun Liu
Yanhong Wei
Publication date
01-08-2017
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 5/2017
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-017-1056-z

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