| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Surface Roughness Formation and Measurement for Metals Built with Laser Powder Bed Fusion |
| Author(s) |
Edwin B. Glaubitz, Joy Gockel, Jason Fox, Orion Kafka, Claire Casey |
| On-Site Speaker (Planned) |
Edwin B. Glaubitz |
| Abstract Scope |
As-Built surfaces in laser powder bed fusion (PBF-LB) have rougher and more complicated surfaces than those from conventional techniques. Several surface features are unique to additive processes: layering artifacts, adhered particles, and large valleys. Surface valleys have been shown to negatively influence the fatigue life by serving as locations for crack initiation, while adhered particles can obstruct measurement of mechanically relevant surface features from contact and optical measurement techniques. Standard PBF-LB metals such as nickel superalloy 718, AlSi10Mg, and stainless steel 316L are built with a wide range of contour parameters and across multiple types of machines. Contour melt pool size and shape are measured and characterized. The surfaces are measured using laser confocal scanning microscopy and X-ray micro-computed tomography. Understanding of relationships between contour melting behavior and resulting surface roughness will inform process parameter development and improve correlations between measurement and part performance. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |