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Title: Phase-field modeling of eutectic structures on the nanoscale: the effect of anisotropy
Authors: Ratkai, Laszlo
Toth, Gyula I.
Kornyei, Laszlo
Pusztai, Tamas
Granasy, Laszlo
Keywords: Ultrafine eutectics
Nanoscale eutectics
Pattern formation
Phase-field theory
Theory vs. experiment
Issue Date: 2017
Publisher: © Springer
Citation: 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.
Abstract: A 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.
Description: 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/s10853-017-0853-8
Sponsor: 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).
Version: Accepted for publication
DOI: 10.1007/s10853-017-0853-8
URI: https://dspace.lboro.ac.uk/2134/27269
Publisher Link: https://doi.org/10.1007/s10853-017-0853-8
ISSN: 0022-2461
Appears in Collections:Published Articles (Maths)

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