About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Lightweight Alloy Matrix Composites
|
| Presentation Title |
In-Situ TiC Formation and Phase Evolution in Ti6Al4V Processed by Digital Light Processing: Pathway to Enhanced Mechanical Properties |
| Author(s) |
Muhtadin Muhtadin, Chuyuan Zheng, Chiu-Yin Chi, Doug Rowland, Jeff Gelb, Jung-Ting Tsai |
| On-Site Speaker (Planned) |
Chuyuan Zheng |
| Abstract Scope |
Ti6Al4V parts were fabricated via Digital Light Processing (DLP) with powder loadings of 50, 60, and 65 wt%. Debinding and sintering promoted densification. SEM, EPMA, and XRD confirmed in-situ TiC formation driven by carbon diffusion from binder decomposition, with higher powder content enhancing TiC formation. TEM analysis verified TiC nanoparticles with FCC structures and Ti-C-rich compositions. Linear shrinkage decreased from 24.3% to 18.6% as powder loading increased, improving dimensional stability. X-ray Ct scan revealed 10.3% total porosity at 60 wt% and detailed the distribution of the matrix, TiC, and pores. The 65 wt% sample achieved an apparent density of 3.00 g/cm³ and a bulk density of 3.70 g/cm³, with open and closed porosity of 10.98% and 2.25%, respectively. Vickers hardness reached 637 HV0.1 at 65 wt%, indicating substantial mechanical enhancement. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Characterization |