- Electron Beam Powder Bed Fusion-manufactured (E-PBF) porous components with narrow pores or channels and rough walls or struts can be filled with trapped powder after the manufacturing process. Adequate powder removal procedures are required, especially for high-density porous structures. In the present research, sheetbased porous structures with different thicknesses based on triply periodic minimal surfaces fabricated by EPBF were subjected to different post-processing methods, including a traditional powder recovery system for EPBF, chemical etching and ultrasound vibration-assisted powder removal. Wall thickness, internal defects, microstructure and morphology features, powder distribution inside the specimens, mechanical properties and deformation modes were investigated. A powder recovery system could not remove all residual powder from dense structures. In turn, chemical etching was effective for surface morphology changes and subsurface layers elimination but not for powderElectron Beam Powder Bed Fusion-manufactured (E-PBF) porous components with narrow pores or channels and rough walls or struts can be filled with trapped powder after the manufacturing process. Adequate powder removal procedures are required, especially for high-density porous structures. In the present research, sheetbased porous structures with different thicknesses based on triply periodic minimal surfaces fabricated by EPBF were subjected to different post-processing methods, including a traditional powder recovery system for EPBF, chemical etching and ultrasound vibration-assisted powder removal. Wall thickness, internal defects, microstructure and morphology features, powder distribution inside the specimens, mechanical properties and deformation modes were investigated. A powder recovery system could not remove all residual powder from dense structures. In turn, chemical etching was effective for surface morphology changes and subsurface layers elimination but not for powder removal, as it affected the wall thickness, considerably influencing the mechanical properties of the whole structure. The ultrasound vibration method was quite effective for the removal of residual powder from sheet-based TMPS structures and without a severe degradation of mechanical properties. 10.1016/j.msea.2022.144479 Ultrasound vibration also caused grain refinement.…
MetadatenAutor*innen: | D. Khrapov, A. Paveleva, M. Kozadayeva, Sergei Evsevleev, Tatiana MishurovaORCiD, Giovanni BrunoORCiD, R. Surmenev, A. Koptyug, M. Surmeneva |
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Dokumenttyp: | Zeitschriftenartikel |
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Veröffentlichungsform: | Verlagsliteratur |
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Sprache: | Englisch |
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Titel des übergeordneten Werkes (Englisch): | Materials Science & Engineering A |
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Jahr der Erstveröffentlichung: | 2023 |
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Organisationseinheit der BAM: | 8 Zerstörungsfreie Prüfung |
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| 8 Zerstörungsfreie Prüfung / 8.5 Röntgenbildgebung |
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Verlag: | Elsevier B.V. |
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Jahrgang/Band: | 862 |
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Aufsatznummer: | 144479 |
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Erste Seite: | 1 |
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Letzte Seite: | 16 |
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DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
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Freie Schlagwörter: | Additive manufacturing; Electron beam powder bed fusion; Residual powder removal; TPMS structures; Ti6Al4V alloy |
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Themenfelder/Aktivitätsfelder der BAM: | Material |
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| Material / Additive Fertigung |
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DOI: | 10.1016/j.msea.2022.144479 |
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Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
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Datum der Freischaltung: | 14.12.2022 |
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Referierte Publikation: | Ja |
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Datum der Eintragung als referierte Publikation: | 23.01.2023 |
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