About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Porosity Guided Improved Mechanical Properties Through Hot Isostatic Pressing treatment in Laser Powder Bed Fusion of Ti-6Al-4V |
| Author(s) |
James Garland Koonce, Vivek K Sahu, Venkata Satya Surya Amaranth Karra, Hector R. Siller |
| On-Site Speaker (Planned) |
James Garland Koonce |
| Abstract Scope |
Additive manufacturing (AM) of Ti-6Al-4V is performed on Laser Powder Bed Fusion (L-PBF) in this investigation, and can be characterized as higher porosity, large columnar prior β-grain along the build direction (BD) with strong <001>//BD solidification texture that leads to unpredictable failure. This study investigates the tensile behavior and failure characteristics of Ti-6Al-4V samples fabricated by L-PBF at two extreme scanning velocities thus ensuring extremes of porosity. These samples are subjected to HIP treatment over prior β-transus temperature. Consequently, resulting microstructure achieves pores closure, prior β-grain refinement with random texture and a pronounced effect in sample processes with higher scanning velocities. Tensile tests were performed under quasistatic monotonic loading to assess mechanical performance and benchmark with traditionally manufactured Ti-6Al-4V samples. Preliminary results indicate that HIP significantly enhances ductility and reduces mechanical scatter, and the tensile behavior of HIP samples exhibits higher strain-to-failure and lower variability compared to their as-built counterparts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Additive Manufacturing, |