About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Feedstock Processing for Multifunctional Materials
|
| Presentation Title |
Studying the Effect of Recoating Speed on the Packing Density in Laser Powder Bed Fusion |
| Author(s) |
Aniruddha Das, Jesse Redford, Eric Whitenton |
| On-Site Speaker (Planned) |
Aniruddha Das |
| Abstract Scope |
Faster recoating speeds can speed up the laser powder bed fusion (LPBF) process, leading to time and cost savings. However, it may not be impactful or even detrimental beyond a certain critical recoating velocity as theorized in literature. Increasing recoating speeds (4 to 16 mm/s) with IN718 feedstock for the LPBF process was tested using the powder spreading testbed (PST). Packing densities of the spread powder were measured at test speeds. The PST also has a moving camera looking through the cross-section to collect the video of the entire spreading process from start to finish. The dynamic angle of repose was collected, and particle tracking was also conducted for the collected video data using particle image velocimetry (PIV). The velocity of particles underneath the recoater blade was measured for each test recoating speed. The particle tracking data was used to study the evolving powder flow patterns with increasing recoater velocity. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, Characterization |