2017_Eutectic_Ratkai.pdf (3.1 MB)
Phase-field modeling of eutectic structures on the nanoscale: the effect of anisotropy
journal contribution
posted on 2017-11-03, 11:11 authored by Laszlo Ratkai, Gyula TothGyula Toth, Laszlo Kornyei, Tamas Pusztai, Laszlo GranasyA simple phase-field model is used to address anisotropic eutectic freezing on the nanoscale in two (2D) and three dimensions (3D). Comparing parameter-free simulations with experiments, it is demonstrated that the employed model can be made quantitative for Ag-Cu. Next, we explore the effect of material properties, and the conditions of freezing on the eutectic pattern. We find that the anisotropies of kinetic coefficient and the interfacial free energies (solid-liquid and solid-solid), the crystal misorientation relative to pulling, the lateral temperature gradient, play essential roles in determining the eutectic pattern. Finally, we explore eutectic morphologies, which form when one of the solid phases are faceted, and investigate cases, in which the kinetic anisotropy for the two solid phases are drastically different.
Funding
This work has been supported by the National Agency for Research, Development, and Innovation (NKFIH), Hungary under contract OTKA-K-115959, and by the EU FP7 EU FP7 projects “ENSEMBLE" (Grant Agreement NMP4-SL-2008-213669) and “EXOMET" (contract No. NMP-LA-2012-280421, co-funded by ESA).
History
School
- Science
Department
- Mathematical Sciences
Published in
Journal of Materials ScienceVolume
52Issue
10Pages
5544 - 5558Citation
RATKAI, L. ...et al., 2017. Phase-field modeling of eutectic structures on the nanoscale: the effect of anisotropy. Journal of Materials Science, 52(10), pp. 5544-5558.Publisher
© SpringerVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2017-01-28Publication date
2017-02-07Copyright date
2017Notes
This is a post-peer-review, pre-copyedit version of an article published in Journal of Materials Science. The final authenticated version is available online at: https://doi.org/10.1007/s10853-017-0853-8ISSN
0022-2461eISSN
1573-4803Publisher version
Language
- en