Publication: Decoupled versus coupled growth dynamics of an irregular eutectic alloy
Program
KU-Authors
KU Authors
Co-Authors
Bottin-Rousseau, Sabine
Akamatsu, Silvere
Editor & Affiliation
Compiler & Affiliation
Translator
Other Contributor
Date
Language
Type
Embargo Status
N/A
Journal Title
Journal ISSN
Volume Title
Alternative Title
Abstract
We present an experimental study of irregular growth patterns observed in real time during thinsample directional solidification of a faceted/nonfaceted eutectic alloy, namely, the transparent 2-amino-2-methyl-1,3-propanediol (AMPD)-succinonitrile (SCN) system. The body-centered cubic SCN crystals are nonfaceted, while monoclinic AMPD crystals grow as faceted needles. At low velocities (<0.3 mu ms(-1)), a decoupled growth regime is observed, during which the tip of the AMPD crystals grows ahead of the SCN-liquid interface. At intermediate velocities, an unsteady coupled-growth regime takes place, with intermittent pinning of triple SCN-AMPD-liquid junctions, and frequent noncrystallographic branching. At higher velocities (>1 mu ms(-1)), two-phase fingers form.
Source
Publisher
Elsevier
Subject
Nanoscience and nanotechnology, Materials science, multidisciplinary, Metallurgy and metallurgical engineering
Citation
Has Part
Source
Scripta Materialia
Book Series Title
Edition
DOI
10.1016/j.scriptamat.2020.07.053
item.page.datauri
Link
Rights
N/A