| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Understanding and Predicting Dynamic Behavior of Materials
|
| Presentation Title |
Influence of Microstructure on The Dynamic Tensile Extrusion of Tantalum |
| Author(s) |
Carl P. Trujillo, Michael W. Burkett, George T. Gray, Saryu Jindal Fensin, Shuh Rong Chen |
| On-Site Speaker (Planned) |
Carl P. Trujillo |
| Abstract Scope |
It is well known that processing can affect the resulting microstructure and eventually properties of materials. In this work, we aim to understand the tensile response of AM Tantalum in comparison to the wrought Ta especially when it is subjected to large strains at high strain rates. This is achieved through the use of the Dynamic Tensile Extrusion experimental technique. Specimens of wrought and AM Ta were accelerated up to 470 m/s and at temperatures of 275C through a high strength die and recovered. A combination of in-situ diagnostics: High Speed Imaging, Photon Doppler Velocimetry and High-Speed Infrared Camera, captured dynamic extruded material topologies, extrusion velocity history and specimen surface temperature. Post mortem microscopy measurements were used to assess the deformation process and the plastic strains realized during the process. Experimental data was used to evaluate hydrocode strength and damage evolution models. Quantitative examination of this work will be presented. |
| Proceedings Inclusion? |
Undecided |