Microgravity studies of solidification patterns in model transparent alloys onboard the International Space Station - Institut des Nanosciences de Paris Access content directly
Journal Articles NPJ Microgravity Year : 2023

Microgravity studies of solidification patterns in model transparent alloys onboard the International Space Station

Abstract

We review recent in situ solidification experiments using nonfaceted model transparent alloys in science-in-microgravity facilities onboard the International Space Station (ISS), namely the Transparent Alloys (TA) apparatus and the Directional Solidification Insert of the DEvice for the study of Critical Liquids and Crystallization (DECLIC-DSI). These directional-solidification devices use innovative optical videomicroscopy imaging techniques to observe the spatiotemporal dynamics of solidification patterns in real time in large samples. In contrast to laboratory conditions on ground, microgravity guarantees the absence or a reduction of convective motion in the liquid, thus ensuring a purely diffusion-controlled growth of the crystalline solid(s). This makes it possible to perform a direct theoretical analysis of the formation process of solidification microstructures with comparisons to quantitative numerical simulations. Important questions that concern multiphase growth patterns in eutectic and peritectic alloys on the one hand and single-phased, cellular and dendritic structures on the other hand have been addressed, and unprecedented results have been obtained. Complex self-organizing phenomena during steady-state and transient coupled growth in eutectics and peritectics, interfacial-anisotropy effects in cellular arrays, and promising insights into the columnar-to-equiaxed transition are highlighted.
Fichier principal
Vignette du fichier
s41526-023-00326-8.pdf (4.07 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive
licence : CC BY - Attribution

Dates and versions

hal-04250845 , version 1 (20-10-2023)

Licence

Attribution

Identifiers

Cite

S. Akamatsu, S. Bottin-Rousseau, V. Witusiewicz, U. Hecht, M. Plapp, et al.. Microgravity studies of solidification patterns in model transparent alloys onboard the International Space Station. NPJ Microgravity, 2023, 9 (1), pp.83. ⟨10.1038/s41526-023-00326-8⟩. ⟨hal-04250845⟩
42 View
8 Download

Altmetric

Share

Gmail Facebook X LinkedIn More