Influence Of Initial Powder Oxidation Level On Process-induced Material Degradation During The Laser Powder Bed Fusion Of Nickel-based Haynes 282
- This study examines the impact of varying oxidation levels in nickel-based Haynes 282 powder on particle degradation during laser powder bed fusion (PBF-LB|M). Four powder batches with oxygen content levels of approximately from 140 ppm to1400 ppm were processed using PBF-LB|M. A powder collection container was fabricated to sample unmelted powder from heat-affected regions of the powder bed. Recoating and melting proceeded without issues; however, increased fume emissions were observed at higher oxidation levels, indicating intensified spatter formation. Post-process analysis revealed that finer particles exhibited greater surface oxidation due to their higher surface-to-volume ratio. Despite significant oxygen uptake, chemical analysis showed no measurable changes in key alloying elements in either the unmelted or spatter particles. Additionally, changes in particle size distribution became more pronounced at high oxidation levels. These findings provide a basis for understandingThis study examines the impact of varying oxidation levels in nickel-based Haynes 282 powder on particle degradation during laser powder bed fusion (PBF-LB|M). Four powder batches with oxygen content levels of approximately from 140 ppm to1400 ppm were processed using PBF-LB|M. A powder collection container was fabricated to sample unmelted powder from heat-affected regions of the powder bed. Recoating and melting proceeded without issues; however, increased fume emissions were observed at higher oxidation levels, indicating intensified spatter formation. Post-process analysis revealed that finer particles exhibited greater surface oxidation due to their higher surface-to-volume ratio. Despite significant oxygen uptake, chemical analysis showed no measurable changes in key alloying elements in either the unmelted or spatter particles. Additionally, changes in particle size distribution became more pronounced at high oxidation levels. These findings provide a basis for understanding oxidation-driven degradation and optimizing powder reuse strategies to maintain material performance.…


| Autor*innen: | Josué DávilaORCiD, Rafael Kleba-EhrhardtORCiD, Gunther MohrORCiD, Kai HilgenbergORCiD |
|---|---|
| Dokumenttyp: | Beitrag zu einem Tagungsband |
| Veröffentlichungsform: | Verlagsliteratur |
| Sprache: | Englisch |
| Titel des übergeordneten Werkes (Englisch): | Euro PM2025 Proceedings |
| Jahr der Erstveröffentlichung: | 2025 |
| Organisationseinheit der BAM: | 9 Komponentensicherheit |
| 9 Komponentensicherheit / 9.0 Abteilungsleitung und andere | |
| Verlag: | EPMA |
| Erste Seite: | 1 |
| Letzte Seite: | 9 |
| DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
| Freie Schlagwörter: | Additive manufacturing; Laser powder bed fusion (PBF-LB/M); Particles ejected; Powder degradation; Powder oxidation; Powder quality; Powder reuse; Recycling; Spatter particles |
| Themenfelder/Aktivitätsfelder der BAM: | Material |
| Material / Additive Fertigung | |
| Veranstaltung: | Euro Powder Metallurgy 2025 Congress & Exhibition |
| Veranstaltungsort: | Glasgow, United Kingdom |
| Beginndatum der Veranstaltung: | 14.09.2025 |
| Enddatum der Veranstaltung: | 17.09.2025 |
| DOI: | 10.59499/EP256767986 |
| Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
| Datum der Freischaltung: | 16.10.2025 |
| Referierte Publikation: | Nein |

