In situ experiments in microgravity and phase-field simulations of the lamellar-to-rod transition during eutectic growth - Archive ouverte HAL Access content directly
Journal Articles Comptes Rendus. Mécanique Year : 2023

In situ experiments in microgravity and phase-field simulations of the lamellar-to-rod transition during eutectic growth

Abstract

In recent experiments on the solidification of the binary eutectic alloy succinonitrile-(D)camphor carried out on board of the International Space Station (ISS), a transition from rod to lamellar patterns was observed for low growth velocities. The transition was interpreted in terms of a competition between a propagative instability of lamellae and a drift induced by a transverse temperature gradient. Phase-field simulations of a symmetric model alloy support this scenario: for a fixed transverse temperature gradient, the transition from rods to lamellae occurs for a critical composition at fixed velocity, and for a critical velocity at fixed composition. Since the alloy and control parameters used in experiments and simulations are different, our results strongly suggest that this morphological transition is generic for eutectic alloys.
Fichier principal
Vignette du fichier
CRMECA_2023__351_S2_A6_0.pdf (4.72 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-03981301 , version 1 (09-02-2023)

Identifiers

Cite

Silvère Akamatsu, Sabine Bottin-Rousseau, Melis Şerefoğlu, Victor T Witusiewicz, Ulrike Hecht, et al.. In situ experiments in microgravity and phase-field simulations of the lamellar-to-rod transition during eutectic growth. Comptes Rendus. Mécanique, 2023, 351 (S2), pp.1-13. ⟨10.5802/crmeca.142⟩. ⟨hal-03981301⟩
31 View
19 Download

Altmetric

Share

Gmail Facebook X LinkedIn More