About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
A Crystal Plasticity Fast-Fourier Transform Model to Probe Slip Localization Development in Precipitation-Hardened IN-718 |
| Author(s) |
Nico Fuchs-Lynch, Shant Tepelekian, Liad Habot, McLean Echlin, Tresa Pollock, Irene Beyerlein |
| On-Site Speaker (Planned) |
Nico Fuchs-Lynch |
| Abstract Scope |
Slip localizations in the nickel-based superalloy IN-718 are studied using highly resolved 3D EBSD data (TriBeam) and CP-FFT modeling. Subregions of the 3D dataset are loaded in uniaxial tension via simulation and a criterion for identifying grains with a high propensity to form slip localizations is determined based on a previously developed model. This strain localization criteria is validated through direct comparison to heaviside-DIC strain measurements at the sample surface. The characteristics of the grains that experience single slip are investigated and statistically significant microstructural features are determined. A similar study on subregions is performed on a dataset with the twin boundaries removed in order to probe the effect of the twinned regions. Separate simulations are performed with and without elastic anisotropy to probe its effect. The propensity for the “single slip” grains to contain annealing twins in the original dataset is also analyzed statistically. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Modeling and Simulation, Computational Materials Science & Engineering |