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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Thermodynamics and Kinetics of Alloys
Presentation Title Microstructural Design via Spinodal-mediated Phase Transformation Pathways in High-entropy Alloys (HEAs) Using Phase-field Modelling
Author(s) Kamalnath Kadirvel, Shalini Roy Koneru, Hamish Lugard Fraser, Yunzhi Wang
On-Site Speaker (Planned) Kamalnath Kadirvel
Abstract Scope Multi-phase HEAs have exhibited superior and unprecedented properties based on the relative arrangements between the co-existing phases. It becomes crucial to identify the various parameters that influence microstructural topology. In this work, we considered a spinodal-mediated phase decomposition of single phase disordered solid solution into a mixture of ordered and disordered solid solutions. We simulated the possible microstructures using phase-field modelling by varying equilibrium volume fractions, modulus mismatch between the co-existing phases, and the free energy surfaces. We observed that topology of the free energy surface is one of the critical parameters in determining the microstructure that is ignored in the existing literature. We focus on the following morphological characteristics: bi-continuous microstructures vs. precipitates + matrix microstructures, ordered matrix + disordered precipitates vs. disordered matrix + ordered precipitates, and the discreteness of the precipitate phase. Our parametric study may help in microstructural design of multi-phase HEAs.
Proceedings Inclusion? Planned:
Keywords Computational Materials Science & Engineering, Phase Transformations, High-Entropy Alloys

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A First-principles Analysis of the Phase Stability of B2/BCC High Entropy Alloys
A Quantitative Model for the Electrodeposition of Metals and Alloys Based on In Situ Characterizations
Accelerated CALPHAD-based Design of a 7xxx High Strength Aluminum Plate Alloy
Al-Ce Alloy Development Using Computational Thermodynamics
An investigation and selected applications of the effective bond energy formalism
Calculation of Critical Points
Calculation of Pourbaix Diagrams for Aqueous Corrosion
CALPHAD and Data-driven Approach for Phase Prediction Model in Refractory High-entropy Alloys
Density-based Phase-field Modelling of the Interplay between Grain Boundary Segregation Transition and Structure
Effect of N and/or B Additions on the Precipitation Kinetics in Isothermally Aged and Creep Ruptured 347H Stainless Steels
Effect of Ti on the Diffusional Growth of A15 Nb3Sn
Evaluation and Assessment of Interdiffusion Coefficients and Atomic Mobility in FCC Al-Cu-V
Experimental Investigation and Thermodynamic Assessment of the Cr-Si Binary System
First-principles Based Calculation of Thermodynamic and Kinetic Properties in Non-Dilute Mg Alloys Using CASM
First-principles Calculations and Thermodynamic Modeling of the Mg-In System with Order-disorder Transitions
High-throughput Design of Multi-principal Element Alloys with Spinodal Decomposition Assisted Microstructures
Impact of Magnetic Excitation and Transition on Atomic Diffusion in Fe Alloys
Improvement of Co-Cr-Ni-Ta Mobility Descriptions
Interfacial and Volumetric Melting Regimes of Sn Nanoparticles
Interfacial Properties and Crystal Growth of Ni, Ti and Ni50Al50 from Molecular Dynamics Simulations
Low Temperature Phase Equilibria Investigation and Phase Identification in the Cu-In-Sn System
Microstructural Design via Spinodal-mediated Phase Transformation Pathways in High-entropy Alloys (HEAs) Using Phase-field Modelling
On the Effect of Different Elements on the Phase Stability of Bulk γ Alloys, Which Compositions Were Derived from Co-base Superalloys
Phase diagram determination of ternary systems for understanding the TCP phase formation in Ni-based superalloys
Prediction of the Microstructure and Corrosion Behavior for the CoyCryFeyMnyNix High-Entropy Alloys by the CALPHAD Method
Study on Densification Kinetics of the Binder Jetted Fine 316L SS Powder
Symbolic Regression Search for a General Free Energy Function for BCC Alloys
The Selection of Solidification Pathway in Rapid Solidification Processes
Thermal Grooving and Grain Growth in a Polycrystalline Thin Film: A Phase-field Study
Thermodynamic Assessment of the V-Ti-B System
Thermodynamic Assessments and Experimental Validation of Iron “Impurity” in Cast Aluminum Alloys
Thermodynamics and Kinetics of Li-metal Alloys
Tunable Heterogeneous Microstructures in a High Throughput Architecture
Understanding Precipitation and Age Hardening Of FeCrAl Alloy Using Explainable Artificial Intelligence

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