About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Role of kink bands in enhancing ductility in laser powder bed fusion processed metastable beta Ti alloy |
| Author(s) |
Tirthesh Ingale, Nachiket Keskar, Matias Garcia Avila, Abhishek Sharma, Sarang Saji, Advika Chesetti, Sudip Sarkar, Kevin Moore, John Foltz, Narendra B. Dahotre, Rajarshi Banerjee |
| On-Site Speaker (Planned) |
Tirthesh Ingale |
| Abstract Scope |
This work discusses the mechanism behind the formation of localized tilt bands, also known as kink bands, in a Laser Powder Bed Fusion-processed metastable β Ti-9V-3.5Al-5Sn-3Zr-2.5Mo-0.2O (wt.%) alloy. We demonstrate that a tensile ductility of over 30%, along with strength of 850 MPa, can be achieved in the as-printed form of this metastable β-Ti alloy. This results from an internal stress relaxation mechanism via the formation of intragranular tilt bands at the stress concentration sites. The deformation behavior was studied using advanced techniques such as Transmission Electron Microscopy, Electron Channeling Contrast Imaging, and Electron Backscatter Diffraction. The results suggest that dislocation interactions lead to the formation of low-energy tilt boundaries, which reduce slip localization and help delay crack initiation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Characterization |