| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
L-7: Validating Texture and Lattice Strain Models via In-situ Neutron Diffraction and Shear Tests |
| Author(s) |
Efthymios Polatidis, Manas Upadhyay, Jan Capek |
| On-Site Speaker (Planned) |
Jan Capek |
| Abstract Scope |
Modeling the micromechanical behavior of materials is usually challenging under complex deformation stress states, or the availability of experimental setups allowing complex stress states, to verify simulations, is limited. Here we employ an in situ shear and neutron diffraction investigation to follow the crystallographic texture, through diffraction intensity and the lattice strain evolution. A flat shear specimen geometry is utilized and the implemented digital image correlation system in the experimental setup records the macroscopic strain evolution. The experimental macroscopic strain and force values are matched with a finite element simulation, from which it is seen that relatively high normal stress components develop. The evolution of diffraction intensity and lattice strain are simulated using the Taylor model and a Fast Fourier Transformation (FFT) crystal plasticity model respectively. Both simulations show very good match with the experimental results, modeling both the texture and lattice strain evolution under shear. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Mechanical Properties, Modeling and Simulation |