Strongly out-of-equilibrium growth morphologies in fast solidifying eutectics
Boussinot G, Döring M, Schmidt M, Apel M (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 6
Article Number: 043405
Journal Issue: 4
DOI: 10.1103/PhysRevMaterials.6.043405
Abstract
In metal printing processes such as laser-based additive manufacturing, typical solidification velocities yield a strongly out-of-equilibrium (SOE) growth regime that is intermediate between the slow solidification in conventional metal casting and rapid solidification regimes characterized by severe solute trapping. Using phase-field simulations supported by experimental observations, we provide evidence for an inherent growth mode of the SOE regime in slightly hypereutectic Al-Ni, leading to the destabilization of the planar eutectic coupled growth front and the development of a protruded state. We interpret this scenario theoretically in terms of a concomitant growth of different solidification modes, here the coupled eutectic together with α primary phase. As another example of concomitant growth under SOE conditions, we present simulation results for single-phase solidification of a Ni fcc-phase exhibiting dendrites and doublons.
Authors with CRIS profile
Markus Döring
Lehrstuhl für Photonische Technologien (LPT)
Michael Schmidt
Lehrstuhl für Photonische Technologien (LPT)
Involved external institutions
Germany (DE)How to cite
APA:
Boussinot, G., Döring, M., Schmidt, M., & Apel, M. (2022). Strongly out-of-equilibrium growth morphologies in fast solidifying eutectics. Physical Review Materials, 6(4). https://doi.org/10.1103/PhysRevMaterials.6.043405
MLA:
Boussinot, G., et al. "Strongly out-of-equilibrium growth morphologies in fast solidifying eutectics." Physical Review Materials 6.4 (2022).
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