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Phase-field modeling of polycrystalline solidification, from needle crystals to spherulites: a review

journal contribution
posted on 06.11.2017 by Laszlo Granasy, Laszlo Ratkai, Attila Szallas, Balint Korbuly, Gyula Toth, Laszlo Kornyei, Tamas Pusztai
Advances in the orientation-field-based phase-field (PF) models made in the past are reviewed. The models applied incorporate homogeneous and heterogeneous nucleation of growth centers and several mechanisms to form new grains at the perimeter of growing crystals, a phenomenon termed growth front nucleation. Examples for PF modeling of such complex polycrystalline structures are shown as impinging symmetric dendrites, polycrystalline growth forms (ranging from disordered dendrites to spherulitic patterns), and various eutectic structures, including spiraling two-phase dendrites. Simulations exploring possible control of solidification patterns in thin films via external fields, confined geometry, particle additives, scratching/piercing the films, etc. are also displayed. Advantages, problems, and possible solutions associated with quantitative PF simulations are discussed briefly.

Funding

This review includes techniques developed in the framework of the EU FP7 Collaborative Project 'EXOMET' (Contract No. NMP-LA-2012-280421, co-funded by ESA) and ESA MAP/PECS projects 'MAGNEPHAS III' (Contract No. 4000105034/11/NL/KML) and 'GRADECET' (Contract No. 4000104330/11/NL/KML).

History

School

  • Science

Department

  • Mathematical Sciences

Published in

Metallurgical and Materials Transactions A

Volume

45

Issue

4

Pages

1694 - 1719

Citation

GRANASY, L. ... et al., 2014. Phase-field modeling of polycrystalline solidification, from needle crystals to spherulites: a review. Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, 45 (4), pp.1694-1719.

Publisher

© Minerals, Metals and Materials Society and ASM International

Version

VoR (Version of Record)

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/

Publication date

2014

ISSN

1073-5623

eISSN

1543-1940

Language

en

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