About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
|
Symposium
|
Process Development
|
Presentation Title |
Effect of Scan Strategy on Melt-pool Geometry, Surface Topology and Internal Porosity of Additively Manufactured Inconel 625 Alloy |
Author(s) |
Ho Yeung, Felix Kim, Jorge Neira |
On-Site Speaker (Planned) |
Ho Yeung |
Abstract Scope |
The effect of the scanning strategy on melt-pool geometry, surface topology, and internal porosity is investigated on a custom-built laser powder bed fusion additive manufacturing (AM) testbed. The testbed adapted an open platform design with all the control parameters accessible, and is driven by an in-house developed simple AM (SAM) control software. The software allows the scan strategy to be created from a combination of different infill patterns/paths and laser power/velocity controls. Nine Inconel 625 cubic parts were built with different scan strategies, some of which are not available on commercial systems. The build process was in-situ monitored with a high-speed camera aligned with the heating laser. The parts built were ex-situ measured with X-ray computed tomography-imaging for porosity, and laser profiler for surface topology. The in-situ and ex-situ measurements are compared, and the characteristics of different scan strategies are highlighted. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |