Megahed, Sandra ; Krämer, Karl Michael ; Kontermann, Christian ; Heinze, Christoph ; Udoh, Annett ; Weihe, Stefan ; Oechsner, Matthias (2023)
Micro-Twinning in IN738LC Manufactured with Laser Powder Bed Fusion.
In: Materials, 2023, 16 (17)
doi: 10.26083/tuprints-00024497
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
Components manufactured with Metal Laser Powder Bed Fusion (PBF-LB/M) are built in a layerwise fashion. The PBF-LB/M build orientation affects grain morphology and orientation. Depending on the build orientation, microstructures from equiaxed to textured grains can develop. In the case of a textured microstructure, a clear anisotropy of the mechanical properties affecting short- and long-term mechanical properties can be observed, which must be considered in the component design. Within the scope of this study, the IN738LC tensile and creep properties of PBF-LB/M samples manufactured in 0° (perpendicular to build direction), 45° and 90° (parallel to build direction) build orientations were investigated. While the hot tensile results (at 850 °C) are as expected, where the tensile properties of the 45° build orientation lay between those of 0° and 90°, the creep results (performed at 850 °C and 200 MPa) of the 45° build orientation show the least time to rupture. This study discusses the microstructural reasoning behind the peculiar creep behavior of 45° oriented IN738LC samples and correlates the results to heat-treated microstructures and the solidification conditions of the PBF-LB/M process itself.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Megahed, Sandra ; Krämer, Karl Michael ; Kontermann, Christian ; Heinze, Christoph ; Udoh, Annett ; Weihe, Stefan ; Oechsner, Matthias |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Micro-Twinning in IN738LC Manufactured with Laser Powder Bed Fusion |
| Sprache: | Englisch |
| Publikationsjahr: | 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2023 |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials |
| Jahrgang/Volume einer Zeitschrift: | 16 |
| (Heft-)Nummer: | 17 |
| Kollation: | 16 Seiten |
| DOI: | 10.26083/tuprints-00024497 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/24497 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | Components manufactured with Metal Laser Powder Bed Fusion (PBF-LB/M) are built in a layerwise fashion. The PBF-LB/M build orientation affects grain morphology and orientation. Depending on the build orientation, microstructures from equiaxed to textured grains can develop. In the case of a textured microstructure, a clear anisotropy of the mechanical properties affecting short- and long-term mechanical properties can be observed, which must be considered in the component design. Within the scope of this study, the IN738LC tensile and creep properties of PBF-LB/M samples manufactured in 0° (perpendicular to build direction), 45° and 90° (parallel to build direction) build orientations were investigated. While the hot tensile results (at 850 °C) are as expected, where the tensile properties of the 45° build orientation lay between those of 0° and 90°, the creep results (performed at 850 °C and 200 MPa) of the 45° build orientation show the least time to rupture. This study discusses the microstructural reasoning behind the peculiar creep behavior of 45° oriented IN738LC samples and correlates the results to heat-treated microstructures and the solidification conditions of the PBF-LB/M process itself. |
| Freie Schlagworte: | laser powder bed fusion, IN738LC, microstructure, creep, micro-twinning |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-244973 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet und Institut für Werkstoffkunde - Zentrum für Konstruktionswerkstoffe - Staatliche Materialprüfungsanstalt Darmstadt (IfW-MPA) |
| Hinterlegungsdatum: | 11 Sep 2023 12:20 |
| Letzte Änderung: | 12 Sep 2023 05:02 |
| PPN: | |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
- Micro-Twinning in IN738LC Manufactured with Laser Powder Bed Fusion. (deposited 11 Sep 2023 12:20) [Gegenwärtig angezeigt]
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