Phase Field Simulation of Dendrite Growth of Fe-C Alloy in a Forced Flow

DOI

10.2991/mmat.2013.29How to use a DOI?

Keywords

Phase-field method, Forced flow, Fe-C alloy, Isothermal solidification, Dendrite growth

Abstract

Based on the KKS model, the phase-field model is built by coupling with the concentration field and flow field, we simulate the dendrite growth during isothermal solidification of Fe-C alloy in a forced flow. The results show that the tip of dendrite arm is parabola shape, the secondary branch appear at the root of main branch, the dendrite growth presents obvious symmetry under the pure diffusion conditions. Because of fluid flushing, the solute concentration of the upstream dendrite arm is low, which lead to the dendrite grow fastly, thus the developed side-branch structure is formed, the tip velocity at steady state increased about 22.05% compared with the case without flow. Solute accumulate in the downstream of dendrite, which hindered the side-dendrite appear, the tip velocity at steady state decreased about 46.49% compared with the case without flow. The horizontal preferred direction of the dendrite is changed by fluid flow, hence horizontal main stem tilts towards the upstream direction.

Copyright

© 2013, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xunfeng Yuan
AU  - Yan Yang
PY  - 2012/11
DA  - 2012/11
TI  - Phase Field Simulation of Dendrite Growth of Fe-C Alloy in a Forced Flow
BT  - Proceedings of the 2012 International Conference on Automobile and Traffic Science, Materials and Metallurgy Engineering
PB  - Atlantis Press
SP  - 152
EP  - 156
SN  - 1951-6851
UR  - https://doi.org/10.2991/mmat.2013.29
DO  - 10.2991/mmat.2013.29
ID  - Yuan2012/11
ER  -