About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Microscale Strain Localization and Interface Damage in Alpha + Beta Ti-6Al-4V |
| Author(s) |
Zhao Liang, C. Cem Tasan |
| On-Site Speaker (Planned) |
Zhao Liang |
| Abstract Scope |
Understanding strain localization and damage mechanisms at high strain levels is critical for improving the mechanical reliability of alpha + beta titanium alloys. Although slip transfer limitations at low strains are generally known, their role in damage initiation at higher deformation stages remains unclear. Here, we perform in situ SEM tensile tests, combining digital image correlation (DIC) and electron backscatter diffraction (EBSD), to study strain evolution in alpha + beta Ti-6Al-4V alloys up to high strain levels approaching fracture. Although global strain partitioning between α and β phases is modest, pronounced strain localization occurs selectively at specific α/β and α/α boundaries, strongly correlated with crystallographic misorientation and slip incompatibility. Additional tests on pre-strained samples reveal further intensified localization, suggesting prior deformation influences subsequent plasticity pathways. Post-mortem analyses indicate that these severely localized regions correspond closely to damage initiation sites, giving insights in enhancing strain compatibility and damage resistance in Ti-6Al-4V. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Mechanical Properties, Characterization |