| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation and Transitions at Grain Boundaries VII
|
| Presentation Title |
Estimation of Misfit Dislocation Density in Hexagonal Titanium Using Microbeam X-Ray Diffraction and the Frank Bilby Equation |
| Author(s) |
Harsha Phukan, Thomas R Bieler, Chen Zhang, Ruqing Xu, Philip Eisenlohr, Martin A Crimp, Carl J Boehlert |
| On-Site Speaker (Planned) |
Harsha Phukan |
| Abstract Scope |
The present study focuses on determination of the geometrically necessary dislocation density in deformed commercial purity Titanium. Data collected from an in-situ differential aperture X-ray microscopy (DAXM) study of an in-situ four-point bending experiment at a surface strain of about 3.5% strain is used for this purpose. The misfit dislocation density estimation is carried out on a set of finer resolution line scans in two mutually perpendicular directions. Diffraction streak analysis is used to identify the misfit plane normal between adjacent voxels and the misfit dislocation density is calculated using the Frank Bilby equation. In particular, the study highlights the gradient of misfit dislocation density near the interface of two grains that have a “hard” and “soft” orientation with respect to the loading direction. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |