bei Google ScholarTitelangaben
Daoud, Haneen ; Kulig, Agata ; Schmidt, Kim ; Diewitz, Lea ; Weiser, Johannes ; Manzoni, Anna ; Glatzel, Uwe:
Process-structure relations in wire-laser directed energy deposition of binary Ti48Al alloy : Effects of substrate pre-heating and heat treatment.
In: Nano Micro Mechanics Review.
Bd. 2
(2026)
Heft 1
.
- S. 11-17.
ISSN 3082-8066
DOI: https://doi.org/10.1142/S3082805826400029
Abstract
Titanium aluminide components fabricated by wire-laser directed energy deposition (DED-LB/M) with a high deposition rate of ∼205cm3⋅h−1 are investigated. To minimize oxidation during processing, deposition is conducted under vacuum with argon (Ar) shielding. The effect of substrate preheating on reducing thermal gradients and promoting room-temperature (RT) ductility was explored. Microstructures are characterized using optical microscopy (OM), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM), and X-ray diffraction (XRD). In the as-deposited condition, the microstructure is heterogeneous, comprising large spheroidal regions of γ-TiAl alongside smaller equiaxed grains containing an α2/γ lamellar structure. Heat treatment at 1375∘C for 2h produces a fully α2/γ lamellar microstructure within very uniform, equiaxed grains (∼0.5–2mm). The interlamellar spacing is 100–400nm. In the heat-treated condition, a homogeneous hardness distribution of 300–350HV1 is obtained across the entire deposited block.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | DED-LB/M; titanium aluminide; fully lamellar; microstructure; vacuum additive; manufacturing |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Metallische Werkstoffe > Lehrstuhl Metallische Werkstoffe - Univ.-Prof. Dr.-Ing. Uwe Glatzel Profilfelder > Advanced Fields Profilfelder > Advanced Fields > Neue Materialien Forschungseinrichtungen Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayreuther Materialzentrum - BayMAT |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 000 Informatik,Informationswissenschaft, allgemeine Werke 600 Technik, Medizin, angewandte Wissenschaften 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 28 Mai 2026 05:39 |
| Letzte Änderung: | 28 Mai 2026 05:39 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/97745 |