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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Materials Research in Reduced Gravity
Presentation Title Dynamics of Eutectic Solidification Patterns in Diffusive Conditions
Author(s) Silvere Akamatsu, Sabine Bottin-Rousseau
On-Site Speaker (Planned) Silvere Akamatsu
Abstract Scope We present in-situ observation studies of the directional solidification of transparent model eutectic alloys. On the basis of the thin-sample directional solidification method, original experimental devices have been developed in our laboratory for investigating fundamental aspects of the dynamics of coupled-growth front patterns in diffusive conditions. The most recent results concern: 1-the eutectic-grain dependency of coupled-growth microstructures, that is, the effects, of crystallographic origin, of the anisotropy of the free energy of the interphase boundaries, 2-the dynamics of lamellar and rod-like eutectic growth patterns in semi-bulk samples, and 3-the univariant growth of ternary eutectics (spiral eutectic dendrite). Quantitative comparison with time-resolved numerical simulations (phase-field) was also crucial. These studies, carried out on ground, are part of the preparation of the science-in-microgravity program Transparent Alloys (ISS/MSG ; ESA/NASA), which aims, in particular, at shedding new light on the lamella-to-rod transition in binary eutectics.
Proceedings Inclusion? Planned: A print-only volume


A Review on Thermophysical Property Measurements of Liquid Metallic Drops on Parabolic Flights, Texus Rocket Flights and the International Space Station
Analysis of a Rotating Magnetic Field on the THM growth of CZT in Microgravity
Analysis of Particle Engulfment Dynamics during Solidification
Coarsening of Dendrites in Solid-Liquid Mixtures: The Low Volume Fraction Limit.
Crystal Nucleation and Growth from Levitated Aqueous Solutions Using Electrostatic Levitation
Dendritic Growth Kinetics in Undercooled Melts of Pure Fe under Static Magnetic Fields
Dynamics of Eutectic Solidification Patterns in Diffusive Conditions
Dynamics of Microstructure Formation in 3D Directional Solidification of Transparent Model Alloys under Microgravity: Analysis of the Primary Spacing Evolution
Effect of Thermal Drift on the Initial Transient Behavior in Directional Solidification of a Bulk Transparent Model Alloy
Electromagnetic Levitation Processing on the International Space Station
Evaluation of the MICAST#2-12 Al-7wt%Si Sample Directionally Solidified Aboard the International Space Station
Growth Morphology and Velocity of Undercooled Fe-B Alloys under Different Fluid Flow Conditions
In Situ Investigation of the Effects of Gravity Level Variations on the Directional Solidification Microstructures during Parabolic Flights
Influence of Convection on the Dendrite/Eutectic Growth Velocity in Cu-Zr Alloys (project MULTIPHAS)
Installation and Operation of the Electromagnetic Levitator EML on ISS and Experiment Preparation
Metallic Liquid Structures, Properties, and Phase Transitions – Ground-Based Studies for ISS Experiments
Metastable Phase Formation from Undercooled Melt in Peritectic Systems under Terrestrial and Microgravity Conditions: Fe-Co vs. Ti-Al
Microstructure Evolution in Undercooled Al-Fe Melts
Modeling of Gravitational Effects on Particle Settling and Shape Distortion During Liquid-Phase Sintering of Tungsten Heavy Alloys
Numerical Simulation of the Oscillation and Damping of Core-Shell-Structured Iron-Slag Droplets for the Measurements of Surface Tension and Viscosity in Reduced Gravity
Phase-field Modeling of Cellular and Dendritic Microstructure Formation during Directional Solidification of Binary Alloys under Diffusive Growth Conditions: Dynamical Selection of the Primary Spacing
Rapid Quench in an Electrostatic Levitator
Reduced-gravity Measurements of the Effect of Oxygen on Properties of Zirconium
Simulation of Shrinkage-induced Segregation in Multicomponent Multiphase Alloys during Reduced-gravity Solidification
Thermophysical and Kinetic Properties of Fe60Cr21Ni19 - Measurements under Reduced Gravity Conditions

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