| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Alloy Design: Bridging Fundamental Physical Metallurgy, Advanced Characterization Techniques, and Integrated Computational Materials Engineering for Advanced Materials
|
| Presentation Title |
Optimizing Process Parameters in Laser Powder Bed Fusion of Ti-6Al-4V: Understanding Melt Pool Dynamics and Pore Splitting Phenomena Using Ultra-High-Speed Synchrotron Radiography |
| Author(s) |
Elena Ruckh, Samy Hocine, Ruben Lambert-Garcia, Anna Getley, Maureen Fitzpatrick, Caterina Iantaffi, Sebastian Marussi, Andy Farndell, Marta Majkut, Alexander Rack, Nick Jones, Chu Lun Alex Leung, Peter D. Lee |
| On-Site Speaker (Planned) |
Elena Ruckh |
| Abstract Scope |
Laser Powder Bed Fusion (LPBF) of Ti-6Al-4V facilitates the production of intricate, lightweight parts for medical, automotive, aerospace, and space sectors. Ensuring the high reliability of these components is essential, relying heavily on the selected process parameters. A thorough understanding of these parameters is critical to establish a stable process window and define its boundaries. However, the influence of these parameters on melt pool dynamics and feature formation is not fully grasped. This study introduces an extended P-V mechanism map (scanning speed vs. laser power) for Ti-6Al-4V single-layer tracks, showcasing laser interaction, melt flow dynamics, feature formation, and solidification via ultra-high-speed synchrotron X-ray imaging and microstructure analysis. It identifies boundaries between melting regimes, including keyhole porosity, where high linear energy density causes pore splitting due to violent rear wall perturbations. This map aids in optimising parameter selection to enhance part quality and performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Other |