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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Computational Thermodynamics and Kinetics
Presentation Title General Method for Incorporating CALPHAD Free Energies of Mixing into Phase Field Models: Application to the α-Zirconium/δ-Hydride System
Author(s) Andrea Jokisaari,
On-Site Speaker (Planned)
Abstract Scope We present a general method of incorporating CALPHAD-based free energies into a phase field model. While CALPHAD-based free energy descriptions provide realistic energetics of alloys, their formulations pose numerical difficulties for phase field simulations because the free energies of mixing are only defined over a finite concentration range of solute and their derivatives exhibit highly nonlinear behavior. In addition, free energies of mixing for different phases are not necessarily defined over the same concentration ranges. The method presented approximates the free energies of mixing using piecewise functions to eliminate the aforementioned characteristics while largely retaining the free energy values and the first and second derivative information, which also affect the thermodynamic and kinetic behavior of the system. The method has been implemented and used to examine hydride precipitation and microstructure formation.
Proceedings Inclusion? Planned: A print-only volume


A Discrete Dislocation Model of Creep in Single Crystals
A Generalized View of Amorphization Resistance in Complex Oxides
A Phase-Field Model for Simulating Microstructure Development during Physical Vapor Deposition of Isotropic Multiphase Polycrystalline Thin Film Systems
A Phase-field Study of Cascading Widmanstätten-ferrite Plates
A Scalable Parallel Clustering Algorithm for Molecular Dynamics
A Verified Phase Field Method for Phase Transformations in Ni-Al-Cr alloys
Anisotropy of Crystal-melt Interface of BCC-Fe and FCC-Fe from Molecular Dynamics Simulation
Application of MIVM for Sn-Ag and Sn-In alloys in Vacuum Distillation
Applications of the ReaxFF Force Field for Identifying Reactive Properties for Complex Materials and Interfaces
Cation Diffusion Path in Ionic Structures -- A Pathfinder Algorithm to Precondition NEB Calculations and a Fast Approximate Barrier Calculation Method
Cluster Variation Method in Computational Thermodynamics
Computational Investigation of Enhanced Activity and Stability in Mo-doped Pt-Ni Octahedral Nanoparticles Using a Cluster Expansion
Considering the Role of Kinetics in Computational Materials Discovery and Development
Defect Formation in Aqueous Environment: Theoretical Assessment of Boron Incorporation in Nickel Ferrite under Conditions of an Operating Pressurized-water Nuclear Reactor (PWR)
Density Functional Theory (DFT) Methods for Integrated Computational Materials Engineering (ICME)
Develop a Diffusivity Database for Mg Alloys Using Diffusion Multiples and Liquid-Solid Diffusion Couples
Doping on the Valley of Hydrogen Solubility: A Route to Design Hydrogen Resistant Zirconium Alloys
Effect of Solute Atoms on Dislocation Motion in Mg: An Electronic Structure Perspective
Effect of Solvent and van der Waals Interactions on the Morphology and Assembly of Lead Sulfide Nanocrystals
Engineering High and Constant Cation Diffusivity in Oxides through Percolation Theory
Enhancement of Ionic Transport in Complex Oxides through Soft Lattice Modes and Epitaxial Strain
Experimental Investigation and Thermodynamic Assessment of Phase Equilibria in the Al-rich Portion of the Al-Mn-Ce Ternary System
Exploration into the Kinetics of Ultra-light Magnesium Alloys
Fast Li-ion Transport Kinetics in LiBH4-based Solid-state Electrolytes
First-principles Study of Interfacial Stability and Solute Partitioning in Al-alloy Precipitates
First-principles Thermodynamic Modeling of µ Phase in the Co-W Alloy System
First Principles Calculations of Lattice Parameters and Elastic Constants of Fe Phases Containing Solutes
First Principles Interatomic Potentials via Compressed Sensing
General Method for Incorporating CALPHAD Free Energies of Mixing into Phase Field Models: Application to the α-Zirconium/δ-Hydride System
High-Throughput ab-initio Solute Diffusion Database with the MAterials Simulation Toolkit (MAST)
Homogeneous Nucleation and Inner Structure Evolution in Nucleus Fe from Classic Molecular Dynamics Simulation
Identification of Bulk Oxide Defects in an Electrochemical Environment: Defect Stability Phase Diagrams
Impact of Varying Oxygen Stoichiometry on Electrochromic Behavior in WO3
Intrinsic Point Defect in Intermetallics: From Computation to Data Mining
Investigation of the Ionic Conductivity of c-ZrO2 by Applying the CALPHAD Approach
J-1: Computational Modeling for High Temperature Materials
J-2: Quantitative Calculation on Sr Segregation of La0.8Sr0.2MnO3±δ Perovskite as a Result of Atmospheric CO2 and H2O
J-4: Experiments and Kinetics Modeling for Gasification of Biomass Char and Coal Char under CO2 and Steam Condition
J-5: Effect of Particle and Interfacial Energy on Morphology of Phases during Spinodal Decomposition
J-6: Effect of Differential Diffusivities of Solutes on Coarsening in Ternary Two Phase Alloys
J-7: Rayleigh Instability of Cylindrical Pores
Kinetics Investigation of Titanium-Based Multicomponent Systems Using Liquid-Solid Diffusion Couples
Light Element Diffusion in Mg Using First Principles Calculations: Anisotropy and Elastodiffusion
Linear and Nonlinear Responses of Microstructures and Microstructure Evolution under Highly Nonequilibrium Conditions
Mesoscopic Simulations of Electric-Field-Aligned Bijel Films for Functionalized Porous Membranes
Modeling Precipitate Evolution in Irradiated Structural Materials
Modeling Precipitation in Mg-RE Alloys Using First-principles Calculations
Molecular Dynamics Study of Unexpected, Anisotropic Diffusion through Nickel-based Alloys and Oxides
Nb Precipitation in ZrNb Alloys
Numerical Analysis Evaluation of Solutions to the Diffusion Equation for Binary Interdiffusion Situations
Phase Field Modeling of Oxide Growth
Phase Field Simulation for the Cementite Shape’s Effect on the Cementite Spheroidization
Phase Stability and Kinetics in Ni-superalloys from First Principles
Phase Stability of Nano-sized Yttria Stabilized Zirconia System
Predicting Novel Pressure-Stabilized Materials Using Evolutionary Algorithms
Property Prediction of Rapidly Solidified Al Alloys by Computational Thermodynamic & Kinetic Modeling
Revisiting Thermodynamic Models for TCP Phases Utilizing DFT Calculations
Revisiting Thermodynamics of The Co-Al-W System
Simulation of Precipitation Sequence and Mechanical Properties of Al-Mg-Si Casing Alloy with Cu Additions
Solid-liquid Phase Transitions of FCC-Al and HCP-Mg Nanoparticles
Solidification in Metals: Insights from Nano-scale Predictive Computational Models
Study of the Temperature Effects on Solid-liquid Anisotropic Interfacial Energy
The Application Software Interface to the Open Calphad Software and Some Examples
The Origin of Anharmonicity in fcc Solids
The Role of Grain Boundaries for Lithium Diffusion in Graphite
Thermal Decomposition Kinetics of Manganese Carbonate in the Process of MnZn Ferrite Preparation
Thermodynamics of L12-containing Co-Al-W Alloys from First-Principles
Thermotransport of a Liquid Metal Alloy: Computational Approach
Transport and Stokes-Einstein Behavior in Molten Mixtures of Network-formers and Network-modifiers
Understanding Thermodynamics and Kinetics at the Electrolyte-Electrode Interfaces in All-Solid-State Li-ion Batteries : Insight from First-Principles Computation

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