| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
The Influence of Contour Offset in Laser Powder Bed Fusion |
| Author(s) |
Alexander Kleen, Edwin Glaubitz, Joy Gockel |
| On-Site Speaker (Planned) |
Alexander Kleen |
| Abstract Scope |
Surface roughness and porosity have been linked to decreased performance in laser powder bed fusion (PBF-LB) parts. Prior work has shown that contour laser power and power influence surface roughness: however, changing these parameters also changes the contour melt pool size and the placement of the contour needs to be considered to fully understand the behavior. Contour offset defines the placement of the contour pass relative to the bulk scans. Coupons with a range of contour speed, power, and offset values are fabricated in PBF-LB from 316L stainless steel. Sources of variation such as dimensional accuracy, contour stability, surface roughness, contour melt pool size, and sub-surface porosity are characterized. Results suggest that the contour placement is a critical parameter to control variation in material structure using the PBF-LB process. Relationships between contour process parameters and properties will optimize future process development. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |