| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Material Behavior Characterization via Multi-Directional Deformation of Sheet Metal
|
| Presentation Title |
Characterization of Commercially Pure Titanium Twinning under Proportional Loading Paths |
| Author(s) |
Jinjin Ha, Abrar Ebrahim, Jinjae Kim, Brad Kinsey |
| On-Site Speaker (Planned) |
Jinjin Ha |
| Abstract Scope |
Twinning of a commercially pure titanium (grade 1) under proportional biaxial stress paths is investigated using a custom designed cruciform specimen. The material is first tested under uniaxial tension in three orientations with respect to the rolling direction, i.e., aligned, transverse, and at 45°, and under equibiaxial tension to characterize the elasto-plastic behavior and to measure the twinning fraction. The experiments are conducted at three temperatures, i.e., 20°, 0°, and -10° C, to affect the twinning behavior. These experiments are used in a finite element simulation of the cruciform testing, including a User Material Subroutine for Abaqus/Standard to account for the twinning, in order to determine the displacement boundary conditions of each arm in order to produce proportional stress paths in the central gauge section. The identified, non-linear displacement paths are applied in the cruciform experiments to assess the twinning in the given stress states and validate the numerical simulations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Characterization, |