| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Microstructural Evolution and Material Properties Due to Manufacturing Processes: A Symposium in Honor of Anthony Rollett
|
| Presentation Title |
Practical Benefits from Spherical Indexing of EBSD Patterns for Microstructure Characterization |
| Author(s) |
Stuart I. Wright, William C. Lenthe, Matthew M. Nowell, René de Kloe |
| On-Site Speaker (Planned) |
Stuart I. Wright |
| Abstract Scope |
As there is usually a link between the polycrystalline microstructure and a material’s physical properties, characterizing the various aspects of the microstructure is critical for properties prediction and understanding microstructural evolution during manufacturing processes. One aspect of the microstructure that must be well characterized is the crystallographic orientation of the constituent crystals. Electron Backscatter Diffraction (EBSD) is an effective tool for characterizing the preferred orientation in the polycrystal as well as the geometric arrangement of the constituent crystals. Professor Rollett was an early adopter of the EBSD technique – even before its automation. After the technique was automated, the texture community embraced it for texture analysis and then the larger materials science and engineering communing recognized its usefulness which led to it becoming standard equipment in materials science focused microscopy facilities. Professor Rollett has noted that EBSD has made texture more accessible to materials scientists instead of it being solely in the realm of those with specialized expertise. While EBSD has proven useful, some materials systems pose specific difficulties for characterization by EBSD, including heavily deformed materials, rough surfaces, fine grain size and pseudo-symmetry to list just a few. In recent years, indexing of the EBSD patterns based on spherical indexing has shown significant improvement in the robustness of EBSD pattern indexing over the traditional Hough transform based approach, particularly in overcoming some of the more obstinate obstacles. A brief introduction to spherical indexing will be given along with examples of its effectiveness over traditional indexing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, |