| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Structural Phase Transformation in Single Crystal Titanium during Dynamic Loading |
| Author(s) |
Curt A. Bronkhorst, Biao Feng, Benjamin Morrow, Ellen Cerreta |
| On-Site Speaker (Planned) |
Curt A. Bronkhorst |
| Abstract Scope |
The mechanical loading of metallic materials to high pressures and over short time durations remains a technically challenging arena of research. We will present a study of structural phase transformation of high-purity titanium single crystals loaded by SHPB and plate-impact. Some sample material from these experiments was also soft-recovered and metallographically examined for structural evolution information. A thermodynamically consistent theory describing the finite elastic, dislocation slip, deformation twin, and phase transformation response of single crystals is presented. This theory presents physics coupling within both the energetic and structural components of the model for general high deformation rate loading conditions. The SHPB and shock loading along the [0 0 0 1] and [1 0 -1 1] directions of single crystal high purity Ti is investigated computationally. Multiple experimental phenomena are interpreted based upon the progression of dislocation slip, deformation twinning, and phase transformation. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |