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Laszlo Granasy
Laszlo
Granasy
Laszlo Ratkai
Laszlo
Ratkai
Attila Szallas
Attila
Szallas
Balint Korbuly
Balint
Korbuly
Gyula Toth
Gyula
Toth
Laszlo Kornyei
Laszlo
Kornyei
Tamas Pusztai
Tamas
Pusztai
Phase-field modeling of polycrystalline solidification, from needle crystals to spherulites: a review
Loughborough University
2017
untagged
Mechanical Engineering
Mathematical Sciences not elsewhere classified
2017-11-06 11:42:07
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/Phase-field_modeling_of_polycrystalline_solidification_from_needle_crystals_to_spherulites_a_review/9377315
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.