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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Frontiers in Solidification: An MPMD Symposium in Honor of Michel Rappaz
Presentation Title Complex Dynamics of Multiphase Solidification Front Patterns in Ternary Eutectic Alloys
Author(s) Silvere Akamatsu, Sabine Bottin-Rousseau, Gabriel P Faivre
On-Site Speaker (Planned) Silvere Akamatsu
Abstract Scope We present a real-time experimental study of two- and three-phased patterns during directional solidification of nonfaceted ternary eutectics. We will first consider eutectic cells and dendrites during univariant growth. We will focus on the scaling laws of the “spiral eutectic dendrite”, which is a nearly paraboloidal finger-like growth morphology with eutectic growth starting from a spiraling structure at the tip. Second, we will present recent results on the dynamics of three-phased, nonvariant eutectic growth patterns in thin samples. Steady-state lamellar growth involving three solid phases can exhibit various stacking motifs. Experimentally, the sole stable motif was of ABAC type (A, B and C designate the three solid phases). We have studied the morphological stability of ABAC patterns as a function of growth velocity and lamellar spacing. We will discuss our observations in reference to previous experimental and numerical work, and finally present more occasional observations of complex, multiscale patterns.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Criterion for Wavelength Selection in Pattern Forming Systems
Atomistic Modeling of Grain Boundary Melting and Pre-melting in Alloys
Atomistic, Experimental and Simulation Investigation on the Modification of Al-Si Alloys
Autogenous Interface Modulations
Bridging Multiple Length Scales in Solidification Modeling: What Can We Do, and What's Worth Doing?
Competitive Solidification Pathways and Glass Formation in Pd-Si-Cu Alloys
Complex Dynamics of Multiphase Solidification Front Patterns in Ternary Eutectic Alloys
Dendrite Arm and Grain Boundary Coalescence
Dendrite Growth Kinetics in Undercooled Melts of Intermetallic Compounds
Dendrite Orientation Transitions in Al-Zn Alloys
Divorced Eutectic Solidification of Mg-Al Alloys
Dynamics of Locked Eutectics in Thin Samples and Phase Orientation Relationships
Evolution of the Specific Solid-liquid Interface Area in Directional Solidification
Fast Crystal Growth in Glass-forming Liquids
Future Challenges in Solidification
Grain Structures and Segregations
Granular Modelling of Solidification and Semi-solid Defect Formation
Hot Tear Criterion Accounting for the Last Stage Precipitation Phenomena in the Solidification Path: A Refinement of the Rappaz Drezet Gremaud Approach
Hot Tearing: After the Rappaz-Drezet-Gremaud Criterion, Where Are We?
In-situ X-ray Observations Showing the Impact of Natural and Forced Convection on Dendritic Solidification
In Situ Characterization by Synchrotron X-ray Radiography of the Growth Dynamics of Equiaxed Grains in Al-10wt.%Cu Alloys
Influence of Icosahedral Ordering in the Liquid on Nucleation of a Solid: Atomistic Simulation Investigations
Inverse Methods and Temperature Gradients – An Expedient Combination for the Determination of Thermophysical Properties
Massive-like Transformation during and after Solidification in Fe-based Alloys
Microstructure and Phase Transitions under Large Undercooling Conditions
Microstructure Evolution in Containerless Solidification
Multi-scale Experiments and Modeling of Metal Alloy Solidification Dynamics
Multiphysics and Multiscale Modeling and Simulation of Solidification Processes
Multiscale Modeling of Columnar to Equiaxed Transition
Nonequilibrium Physics in Materials Research
Phase-field Crystal Modeling of Crystal Nucleation Including Homogeneous and Heterogeneous Processes, and Growth Front Nucleation
Phase-field Simulations of Dendritic Sidebranching in Three Dimensions
QQ-10: Anomalous Growth Behaviour in the Undercooled Al-Ni Alloy System
QQ-11: Upscaling from Mesoscopic to Macroscopic Solidification Models by Volume Averaging
QQ-12: Anisotropic Crystal Growth in bcc Metals: From Phase-field Crystal to Conventional Phase-field
QQ-1: Real-time Radiographic Observation of Equiaxed Dendrite Growth in Al-Ge Alloys
QQ-3: Macrosegregation and Grain Formation Caused by Convection Associated with Directional Solidification through Cross-Section Increase
QQ-4: In-situ Synchrotron X-ray Radiography Measurement of the Diffusion Zones during Equiaxed Solidification of Al-Cu Alloys
QQ-5: Physically Consistent Multiphase Field Theory of First Order Phase Transitions
QQ-6: Phase-field Simulation Study of Dendritic Grain Growth Competition during Directional Solidification of Alloys
QQ-8: The Model of Peritectic Phases Crystallization in the Zinc Coating
QQ-9: Computer Simulation of Freckle Formation Using a Three-Dimensional Micro-scale Model
Simulation of Crystal Sedimentation and Viscoplastic Behavior of Sedimented Equiaxed Mushy Zones
Single-Phase Filamentary Cellular Breakdown via Laser-Induced Solute Segregation
Solidification in 4D
Solute Precipitate Nucleation: Advances in Theory and Simulation Methods
Spreading of Liquid Pb Droplets on an Al Surface Exhibiting Solid-liquid Interfacial Premelting
Structural and Compositional Templating for Heterogeneous Nucleation
Study of Solidification Phenomena Using Phase Field Crystal Models
The Application of Oriented Alloy Single Crystals to the Study of Solidification, Mass Transport, and Related Phenomena: Prior Progress and Future Potential
Thermal-Fluid Model of Meniscus Behavior during Mold Oscillation in Steel Continuous Casting

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