About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
Revealing Dislocations Using Electron Channeling Contrast Imaging and Diffraction in Olivine |
Author(s) |
Muhammad Haroon Qaisar, Jessica White, David Wallis, Thomas Benjamin Britton |
On-Site Speaker (Planned) |
Thomas Benjamin Britton |
Abstract Scope |
In this work, we apply and develop electron channeling contrast imaging (ECCI) and electron backscatter diffraction (EBSD) analysis to reveal the structures and interactions of individual dislocations with microstructural features in deformed 'single crystal' San Carlos olivine. The deformation of human-made (i.e. manufactured) and natural crystalline materials share many common features, including the motion and interaction of dislocations that contribute towards plasticity and creep. In the lithosphere, olivine is significant in contributing towards the rheology of tectonic plates. Though careful understanding and control of the scanning electron microscope, we can reveal and classify individual edge, screw, mixed dislocations, including the formation of arrays that form low-angle tilt boundaries in the scanning electron microscope (SEM). Our findings help contribute towards the creation of deformation models that are used to describe the behavior of planet earth. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Ceramics, |