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Meeting 2027 TMS Annual Meeting & Exhibition
Symposium Microstructure-Sensitive Design and Advanced Characterization: An MPMD/SMD Symposium Honoring David T. Fullwood
Presentation Title Virtual Aperture Electron Backscatter Diffraction for Dislocation Mapping
Author(s) Lucas Seeley, Samuel Ehrman, McLean Echlin, Tresa Pollock, Marc De Graef
On-Site Speaker (Planned) Lucas Seeley
Abstract Scope The defect structure of a GP700 CoNi – based superalloy produced via laser powder bed fusion was investigated through electron backscatter diffraction (EBSD) and electron channeling contrast imaging (ECCI). Utilizing low-voltage, fine-step-size EBSD, the complex microstructure was characterized with a dictionary indexing algorithm and simulated electron backscatter patterns (EBSPs). Strain-induced distortions in experimental EBSPs were tracked by rotating a virtual aperture across an individual feature common to all patterns in the scan region. By integrating the intensity within the virtual aperture and plotting it spatially, the strain fields outlining dislocation walls were visualized. Comparison with ECCI micrographs were then used to assess the validity of this high throughput EBSD technique for dislocation imaging.
Proceedings Inclusion? Planned:
Keywords Characterization, Additive Manufacturing, Copper / Nickel / Cobalt

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A brief history of MSD and HREBSD
A cohesive zone model for grain boundary plasticity to interpret high-resolution strain maps
A Decade of Dictionary Indexing: What Have We Learned?
A granular-scale understanding of strain localization behavior in pure magnesium under compression
A Journey in Quantifying and Mapping Microstructure: From Correlation Functions to Machine Learning Manifolds
A Microstructure-Sensitive Framework for Ductile Damage Evolution in Polycrystalline Materials
A Process–Microstructure Integrated Modeling Framework for Predicting Peripheral Coarse Grain Formation in Aluminum Extrudates
A Recapitulation of 3D Microstructures
Advanced Characterization and Simulation of Microstructures in AM Metallic Samples
Analysis of Excess Dislocation Content in Metals with Gradient Microstructures
Analytical Modeling of Additive Manufacturing
Beyond Characteristic Spacing: A Microstructure-Sensitive Statistical Framework for Precipitate Strengthening in Complex Alloys
Capacitive MEMS Accelerometer for Hypersonic Applications
Charting the Space of Microstructures
Correlative HR-DIC and EBSD for Quantitative Metrics of Plastic Strain Localization and Microstructure Design
Coupling of a Large Strain Elasto-Viscoplastic Fast Fourier Transform Constitutive Model with the Implicit Finite Element Method
Deformation Mechanisms in Pristine Ruthenium Microparticles Produced via Solid-State Dewetting
Determining the deformation mechanisms during tensile and creep testing in fusion relevant
Disconnection-enabled Plastic Shear De-localization in Austenitic Stainless Steel
From Defects to Fracture: A Multiscale, Microstructure-Sensitive View of Ductile Rupture in Metals
Grain Boundary Effects on Nanoindentation response of Tantalum Bicrystals: Experiments and Coupled Crystal Plasticity-Cohesive Zone Element Modeling
Grain boundary segregation-controlled plasticity in magnesium rare-earth alloys
HR-EBSD analysis of thin films and microelectronic devices
Influence of stacking fault energy and slip planarity on dislocation/grain boundary interactions
Integrated processing–microstructure–property modeling of LPBF pure copper and GRCop-42 for rotating detonation engine applications
Measurement of Flow Stresses for High Strain Rate, High Temperature Processes: Application to Friction Stir and Rotary Friction Welding
Mechanistic Origin of Portevin–Le Chatelier Suppression in Cu-Reinforced Al-Mg Alloys: An Experimentally Validated Molecular Dynamics Study
Microstructural Failure Modes in Refractory Alloys Subjected to Extreme Environments
Microstructure-Sensitive Design of Polycrystalline Materials
Modelling Recrystallization Texture Evolution During Thermomechanical Processing of Secondary Aluminium Alloys: A High-Resolution CPFFT–CA Coupled Workflow
Multiscale Mechanical Characterization and Statistical Microstructure Quantification of Ti-based Bulk Metallic Glass-Matrix Composites
Optimizing the Microstructure and Texture for a Given 6xxx Series Al Alloys Under Tensile Loading Conditions Using Crystal Plasticity
Patterns First: A Retrieval-Augmented, Uncertainty-Aware Platform for High-Fidelity EBSD Acquisition to Enable Microstructure-Sensitive Design
Porosity-Dependent Fracture Prediction of Aluminum Die-Castings Using a Microstructure-Informed GTN Damage Model
Predicting Microstructure-Dependent Yield Behavior in Polycrystals Using a Stochastic Crystal Plasticity FEM Framework
Sensitivity assessment of full-field HR-EBSD to pattern acquisition parameters
Simulations of Grain boundary-dislocation interactions
Spectral Decomposition, Video Games, and Transformers for Microstructure Design
Stochastic Digital Process Twin Design of Mesoscale Surface-Machined Polycrystalline Metals
Strain gradient crystal plasticity finite element modeling of backstress fields for strain-path reversals
Understanding microplasticity of high strength steels
Utilizing microstructural defects to enhance the damping properties of steels
Validating Grain-Scale Plastic Deformation and Fracture Using Experimental Characterization and CPFEM
Virtual Aperture Electron Backscatter Diffraction for Dislocation Mapping
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