| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
2023 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-32: Melt-pool Dynamics during Multiple-laser-beamed Powder Bed Fusion of Stainless Steel |
| Author(s) |
Marco Rupp, Shuichiro Hayashi, Claire Dashe, Wenxuan Zhang, Craig B. Arnold |
| On-Site Speaker (Planned) |
Marco Rupp |
| Abstract Scope |
Laser-based Powder Bed Fusion (L-PBF) is an emerging additive-manufacturing technique capable of creating complex structures with high resolution out of metal powders. However, current limitations in the processing speeds and resulting microstructures have hindered the advancement of L-PBF. In this study we have devised a multiple-laser beam setup and investigated the fundamental implications of using a multiple-laser setup. For the experiments, two 1064-nm Nd-YAG-lasers operating in the continuous-wave mode were focused onto a layer of 316L stainless steel powder. When the two laser beams were scanned in parallel at a specific parameter range, a new melt-pool regime displaying a periodic pattern appeared. This pattern was attributed to be a result of the growth and decline of the melt-pool due to the Rayleigh-plateau instability. Additionally, we were able to link the geometry of the melt-track to the energy input and melt-pool dynamics. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Solidification, |