| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Nucleation of Damage Along Twin-Twin Boundaries in (α+β) Ti Alloys |
| Author(s) |
Megan F. L. Cooper, Shaolou Wei, C. Cem Taşan |
| On-Site Speaker (Planned) |
Megan F. L. Cooper |
| Abstract Scope |
Deformation twinning can be beneficial for Ti alloys by improving their strength and ductility via the twinning-induced plasticity (TWIP) effect. However, twinning can also promote stress concentrations and local damage nucleation, as new boundaries can inhibit slip transfer and twins often deform nonuniformly with the surrounding microstructure. To better understand the micromechanical link between deformation twinning and damage in a ductile (α+β) Ti alloy, we statistically determined the microstructural boundaries that are most prone to damage nucleation at different strains. With the aid of in-situ SEM and EBSD techniques, we investigated how various slip modes and extension twinning contributed to microstructural evolution, especially in the post-uniform elongation regime. Our analyses revealed how the growth of {10-12} twins, and the interaction between different twin variants, played a key role in the formation of damage in the primary α phase at high local strain levels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Mechanical Properties, |