| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
2023 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-20: Correlating Laser Process Conditions to Balling Severity with Time-Resolved Synchrotron X-ray Visualization |
| Author(s) |
John V. Smith, Runbo Jiang, Anthony Rollett |
| On-Site Speaker (Planned) |
John V. Smith |
| Abstract Scope |
There has been a significant interest in maximizing the build rates in laser powder bed fusion additive manufacturing (AM) to increase efficiency and decrease costs. However, while operating at higher scan speeds and powers, the tail end of the melt pool will bead up, placing an upper bound on the process space for producing defect-free parts. In this work, we employ high speed synchrotron x-ray imaging to characterize the bead up phenomenon in Inconel 718 in real time, Working in power ranges of 150-850 Watts and velocity ranges of 500-4000 millimeters per second. It was discovered that there were distinct correlations between process conditions and bead up severity and that a time resolved quantification of the bead up revealed sinusoidal attributes. Ex situ examination of the balling single track microstructures was performed and no detrimental microstructure caused by printing at higher speeds and powers was discovered. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Process Technology, |