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About this Abstract
Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Advanced Characterization Techniques for Quantifying and Modeling Deformation
Presentation Title Microstructure Informatics: Insights into Selective Grain Growth in Polycrystalline Ni-Base Superalloys
Author(s) Pascal Thome, Luis Arciniaga, Sammy Tin
On-Site Speaker (Planned) Pascal Thome
Abstract Scope The advancement of Microstructure Informatics (MI) has led to significant improvements in the characterization of advanced polycrystalline Ni-base superalloys during hot forging and subsequent heat treatment by combining Electron Backscatter Diffraction (EBSD) and Energy Dispersive X-Ray Spectroscopy (EDS) with Computer Vision (CV) and Machine Learning (ML). We present an automated procedure that extracts a rich array of physical, crystallographic and geometric microstructure descriptors which can be used to characterize microstructure evolution during processing. This enabled unprecedented insights into phenomena related to selective grain growth (SGG) in powder metallurgy processed turbine discs. We demonstrate that localized plastic strain and specific spatial arrangements of γ’ precipitates significantly influence grain growth kinetics and recrystallization mechanisms. The quantitative analysis of those features enables the identification of precursors for SGG. Using automated Microstructure Informatics provides robust, physically based metrics for optimizing alloy processing and performance of components for the application in advanced turbine engines.
Proceedings Inclusion? Planned:
Keywords Characterization, High-Temperature Materials, Machine Learning

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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A Gradient-Based Approach for Recovering Admissible Intragranular Strain and Orientation Fields from High-Energy X-Ray Diffraction Data
Accelerating Magnesium Alloy Research: Simulation-Assisted HEDM Experiments and Data Practices
Advanced EBSD-Based Identification of Deformation Twinning Using MTEX
Advanced SEM-Based Multimodal Characterization Approach of The High Temperature Behaviour of Additively Manufactured GRX-810
Application of a Linear Homography Based Approach for Absolute Residual Deformation Extraction from Electron Backscatter Diffraction Patterns
Application of Mechanical Equilibrium to Correct HR-EBSD and 3D-XRD Stress Measurements
Application of X-Ray Microscopy and Machine Learning in Analyzing Metal Matrix Syntactic Foams
Characterization of Nanoscale Dislocation Loops Via High-Accuracy g·b Analysis with Higher Order Reflections
Characterizing the Localized and Stress-Induced χ Phase Transformation in a Ni-Based Superalloy
Correlative 4DSTEM Study of Deformation Near Serrated Grain Boundaries
Deformation Micromechanisms in Different Generation Ni-Based Single Crystal Superalloys with a Focus on TMS-238 Specific Behavior
Dislocation Mobility in FeCr Alloys: Stress Correlation Effects in Discrete Dislocation Dynamics Simulations
Dislocation Structures and Their Effect on Work-Hardening in Deformed High Purity Iron
Dynamics of Portevin-Le Chatelier Banding Revealed Through Grain Refinement in High-Mn Austenitic Steel: Sequential Overcoming of Necking
Elasto-Visco-Plastic Modeling of Dual Phase Steel
Enabling Micro-Thermomechanical Modelling Using a Novel Continuous-Wave Laser and SEM Coupling
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Evaluation of Machining Deformation in High Temperature Superalloys Using Grazing-Incidence X-Ray Diffraction Methods
Evolution of Supersaturated Metastable Phase in Sputtered CuFe Alloy
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G-1: A Combined Experimental and Computational Study on Quench Cracking Characterisation and Martensite Evolution in Bearing Steels
G-2: Characterization of Active Slip Systems in Mg-Y Alloys Via In Situ Micropillar Tension of Single- and Bi-Crystals
G-38: Microstructural Characterization and Crystal Plasticity Modeling for Ti-6Al-4V for Predicting Forming Limit Diagrams.
G-3: Dynamic Grain-Boundary Strengthening Contributes to Hardening During Microindentation
G-4: Measuring and Modeling Geometrically Necessary Dislocation Densities in Magnesium Alloys Using EBSD and PRISMS-Plasticity
G-5: On the Role of Slip and Interfaces on Plastic Localization Behavior in Ferritic-Martensitic Steels for Next-Generation Nuclear Reactors
G-6: Revealing Dissolution and Reprecipitation Behaviors of Inert Phases in LPBF Structures via Extraction Replication
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G-8: Xtending the LAPX Model for the Prediction of Creep of Ni-Superalloys Using High Performance Computing
High-Resolution, Correlative 4D STEM Orientation Analysis with STEMx OIM and DigitalMicrograph
In-Situ Characterization and Modeling of Molecular Crystal Mechanical Response
In-Situ Material Characterization of Steel Through High-Speed Imaging During Orthogonal Cutting
In-Situ TEM Investigation of Fracture Growth in Novel Nanolaminate Thin Films
Influence Of Multiaxial Deformation and Temperature on the Extent Of Strain-Induced Martensitic Transformations in Stainless Steels: Experiments and Crystal Plasticity Modeling
Intragranular Evolution of Slip System Strength and Activity in Titanium Using Point-Focused High-Energy Diffraction Microscopy
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Near-Theoretical Strength and Large Elasticity of Ceramic Reinforcements in Steels
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Quantification and Prediction of Defect-Induced Fracture Using Digital Twins
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