About this Abstract |
Meeting |
6th International Congress on 3D Materials Science (3DMS 2022)
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Symposium
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6th International Congress on 3D Materials Science (3DMS 2022)
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Presentation Title |
3D Characterization of Damage in Spalled Tantalum |
Author(s) |
Toby Francis, Paul Rottmann, Andrew Polonsky, Marie-Agathe Charpagne, McLean Echlin, William Lenthe, Veronica Livescu, David Jones, George Thompson Gray, Marc De Graef, Tresa Pollock |
On-Site Speaker (Planned) |
Toby Francis |
Abstract Scope |
The use of electron backscatter diffraction (EBSD) to characterize damaged materials can provide significant insights into the microstructural mechanisms underlying failure. However, properly characterizing the nature of failure initiation sites requires three-dimensional data with high spatial resolution. In this talk, we discuss the use of a TriBeam multi-modal imaging experiment on plate-impacted tantalum which underwent partial spallation. Advancements in the processing of 3D-EBSD data, namely advanced pattern indexing and distortion correction techniques, will be shown to be crucial for successful characterization of heavily-deformed materials. The resulting statistics regarding the microstructural neighborhoods and plastic deformation surrounding voids provide critical insights into void nucleation and growth mechanisms. In particular, these analyses point towards cavitation as the micromechanism for ductile spallation in high-purity metals. Quadruple points will be shown to be crucial to understanding failure, exemplifying the necessity for 3D characterization of failed specimens. |
Proceedings Inclusion? |
Definite: Other |