| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
2023 Technical Division Student Poster Contest
|
| Presentation Title |
SPU-13: An In-situ Radiography Study on Meltpool Dynamics and Fluid Flow as a Function of Laser Power in Ti-6Al-4V Raster Melts |
| Author(s) |
Garrett A. Fields, Rakesh R. Kamath, Gerry L. Knapp, John S. Coleman, Stuart R. Slattery, Sam T. Reeve, Hahn Choo |
| On-Site Speaker (Planned) |
Garrett A. Fields |
| Abstract Scope |
Understanding melt pool dynamics and fluid flow during melting and solidification is key to improving metal additive manufacturing (AM) processes. This study performed single line melts on Ti-6Al-4V alloy substrates with varying laser powers (76.5 W to 437 W) at a constant scan speed of 0.4 m/s in a laser-AM simulator at the 32-ID-B beamline, Advanced Photon Source, Argonne National Laboratory. The transient evolution of the melt pool dynamics was observed in-situ using a high-speed, high-resolution synchrotron x-ray radiography technique. The meltpool and vapor cavity dimensions, interface velocity, dynamics, and fluid flow were analyzed using radiography images. The dimensional evolution provided by radiography and microscopy guided current meltpool models to better understand the transition between melting modes which will show the influence of keyholing on meltpool geometry. These findings will further validate and improve finite volume meltpool simulations, like OpenFOAM-based solvers, which contribute to optimizing the metal AM process. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Titanium |