About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fracture and Deformation Across Length Scales: Celebrating the Legacy of William Gerberich
|
| Presentation Title |
Role of Grain Boundary Slip Transfer on Deformation and Damage Behavior in Titanium |
| Author(s) |
Bhargav Rajeshbhai Sudhalkar, Anirban Patra, Indradev Samajdar |
| On-Site Speaker (Planned) |
Bhargav Rajeshbhai Sudhalkar |
| Abstract Scope |
The deformation behavior of hcp titanium is critically influenced by slip transfer across grain boundaries, which governs both intergranular damage and twinning. This study uses the Luster–Morris parameter (mʹ) to quantify slip transferability and link it to macroscale mechanical responses. Two cold-pilgered titanium tubes, deformed via different strain paths but to similar strain levels, showed contrasting damage behavior. Intergranular cracking occurred only where low mʹ boundaries exhibited high residual stress gradients. Twinning behavior also varied: S-type twins (high mʹ) grew slowly, while N-type twins (low mʹ) showed rapid growth. TEM-PED and MD simulations confirmed that low mʹ interfaces hinder slip transmission, promoting dislocation pile-ups and twin growth or damage. These results demonstrate that intergranular slip transfer efficiency is a common mechanism driving damage and plasticity in hcp titanium. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Mechanical Properties, Modeling and Simulation |