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
Michael Schmidt
Lehrstuhl für Photonische Technologien
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://dx.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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