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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Recent Advances in Electron Back-Scattered Diffraction and Related Techniques
Presentation Title Spherical Indexing Based on Dictionary Indexing Applied to Overlapping Pattern of Low-scattering Forsterite Due to Small Grain Sizes
Author(s) Alexandra Austin, René de Kloe, Katharina Tinka Marquardt
On-Site Speaker (Planned) Katharina Tinka Marquardt
Abstract Scope Complex, low-symmetry crystal structures, weak scattering, beam damage and charging are common problems causing low quality EBSD patterns. This in combination with complex microstructures, deformation, and wide ranges of grain sizes present challenges for EBSD analysis. In this study we successfully mapped the orientations of synthetic polycrystalline Mg2SiO4 with an average grain size of 400 nm that was produced by spark plasma sintering 1. 10 kV accelerating voltage and 60 nm step size were used to collect patterns with the Clarity EBSD detector. The Kikuchi patterns were indexed using the Spherical Indexing based on the dictionary indexing approach (DI)2 implemented in EDAX OIM software . This method allows accurate indexing of lower quality patterns3. We compare the grain boundary plane distribution of Hough and SI routines. 1 Koizumi et al. Phys. Chem. Miner. (2010) 2 Chen et al. Microsc. Microanal. (2015) 3 Marquardt et al. Am. Mineral. (2017)
Proceedings Inclusion? Planned:


A Multi-generational Study of Detectors for Use in Cross-correlation-based EBSD: From Scintillators to Direct Detection
Accelerating Dictionary Indexing with Principal Component Analysis
Application of a Differential Evolution Optimization Algorithm on Deformation Extraction from EBSD Patterns
Applications of 3D EBSD for Understanding Complex Microstructures
Challenges and Prospects of TKD for Nanocrystalline Materials Characterization
Cross-sectional Electron Channeling Contrast Imaging
Enhanced SEM-based Electron Diffraction Analyses Using Intelligent Hybrid Pattern Matching
Exploring New Capabilities in Electron Backscattered Diffraction Using Direct Electron Detectors
Extraction of Defect Images by Post-processing of EBSD Patterns
Fast Forward Model Indexing: Theory and Application
Kikuchipy: An Open-Source Toolbox for Analysis of EBSD Patterns
Micro-analysis of δ-hydrides in Pure Zirconium by HR-EBSD and TKD
Microstructural Evolution Revealed by EBSD in Aluminum Alloys After Severe Plastic Deformation
Phase Differentiation in Half- and Full-Heusler Composites Using EBSD
Phase Distinction of Ordered Intermetallic Phases Using EBSD
Spherical Indexing Based on Dictionary Indexing Applied to Overlapping Pattern of Low-scattering Forsterite Due to Small Grain Sizes
The Use of NLPAR in the Analysis of Low Misorientation Gradients
Toward Correlative Grain Boundary Analysis in CIGS

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