About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
Microstructure Evolution, Deformation, and Damage |
Author(s) |
Veronica Anghel, Ramon M Martinez, Benjamin K Derby |
On-Site Speaker (Planned) |
Veronica Anghel |
Abstract Scope |
Damage nucleation in polycrystals occurs in locations of large strain concentrations, or microstructurally, in regions where heterogeneous deformation occurs. Experiments commonly show that cracks and voids tend to develop preferentially in connection to different microstructural features, indicating the significance of microstructural heterogeneity in local deformation and damage nucleation. This work focuses on the evolution of intra-granular deformation and damage nucleation under loading in polycrystalline and bi-crystal metallic samples. Miniature tensile samples of metals are used to investigate the evolution of deformation and damage nucleation. Electron Backscatter Diffraction and in-situ Digital Image Correlation measurements looking at active deformation mechanisms, strain distribution, and intragranular damage evolution are employed for detailed analysis of deformation evolution and damage nucleation. Results present influence of grain boundary types and initial grain orientations with respect to loading, as well as evolution of dislocation densities in the microstructure. |
Proceedings Inclusion? |
Planned: |