| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
| Presentation Title |
Microtensile Testing of (fcc) Copper and (hcp) Titanium at Elevated Temperatures |
| Author(s) |
Robert Wheeler, Adam Shiveley, Amit Pandey, Jiashi Miao, Michael Mills |
| On-Site Speaker (Planned) |
Robert Wheeler |
| Abstract Scope |
As the temperature increases above ambient levels, deformation in metals generally transitions from dislocation glide or twin-controlled mechanisms to diffusion-controlled processes. Where applications for metals involve high temperature tensile loading, it is best to study deformation in laboratory experiments in-situ, under tensile conditions and at temperature. In the present investigation, we carry out small-scale tensile tests on two elemental metals, (fcc) copper and (hcp) titanium. These tests are carried out in-situ within the SEM or Dual Beam FIB where imaging is conducted during quasi-static loading of specimens held at temperatures ranging from room temperature to 500°C. The deformation microstructures are first related to the stress-strain response. The relaxation or creep responses observed during individual hold stages while loading are then interpreted based on an Onset of Plasticity via Relaxation Analysis (OPRA) and referenced to the temperature-stress regimes present in Frost-Ashby Deformation maps. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |