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  Laser additive manufacturing of copper–chromium–niobium alloys using gas atomized powder

Maischner, D., Fritsching, U., Kini, A., Weisheit, A., Uhlenwinkel, V., Schleifenbaum, J. H., et al. (2020). Laser additive manufacturing of copper–chromium–niobium alloys using gas atomized powder. International Journal of Materials Research, 111(7), 587-593. doi:10.3139/146.111912.

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 Creators:
Maischner, Dora1, Author              
Fritsching, Udo2, 3, Author              
Kini, Anoop4, Author              
Weisheit, Andreas5, Author              
Uhlenwinkel, Volker6, Author              
Schleifenbaum, Johannes H.7, Author              
Biermann, Tim8, Author              
Affiliations:
1Fraunhofer-Institut für Lasertechnik, Steinbachstraße 45, 52074 Aachen, Germany, ou_persistent22              
2Leibniz-Institute for Materials Engineering IWT, Bremen, Germany, ou_persistent22              
3MAPEX Center for Materials and Processes, University Bremen, Germany, ou_persistent22              
4Alloys for Additive Manufacturing, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_2117289              
5Fraunhofer Institute for Laser Technology ILT, Aachen, Germany, ou_persistent22              
6Leibniz-Institut für Werkstofforientierte Technologien - IWT, Badgasteiner Straße 3, Bremen, Germany, ou_persistent22              
7Digital Additive Production (DAP), RWTH Aachen University, 52074 Aachen, Germany, ou_persistent22              
8Lehrstuhl für Lasertechnik, RWTH Aachen, Germany, ou_persistent22              

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Free keywords: 3D printers; Additives; Copper; Deposition; High strength alloys; Metallic matrix composites; Powder metals; Rapid solidification, Elevated temperature; Epitaxial nucleation; Fine precipitates; Gas-atomized powders; Laser additive manufacturing; Laser metal deposition; Manufacturing techniques; Thermal and electrical properties, Niobium alloys
 Abstract: Copper–chrome–niobium alloys exhibit excellent thermal and electrical properties combined with high strength at elevated temperatures. Additive manufacturing techniques such as laser metal deposition using powder as raw material offer the potential for rapid solidification as well as a high freedom of design to manufacture parts layer by layer. Powder samples of copper–chrome–niobium alloys were produced by gas atomization. Via laser metal deposition, bulk volumes without cracks and with a very low porosity can be built up. Rapid solidification leads to the formation of fine precipitates which are likely to be (Cr,Fe)2Nb. The precipitates are distributed homogeneously in the copper matrix. The copper crystals grow across the layers due to epitaxial nucleation on the preceding layer. © Carl Hanser Verlag GmbH Co. KG

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Language(s): eng - English
 Dates: 2020-07
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.3139/146.111912
 Degree: -

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Title: International Journal of Materials Research
  Abbreviation : Int. J. Mat. Res.
Source Genre: Journal
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Affiliations:
Publ. Info: München, Germany : Hanser
Pages: - Volume / Issue: 111 (7) Sequence Number: - Start / End Page: 587 - 593 Identifier: ISSN: 1862-5282
CoNE: https://pure.mpg.de/cone/journals/resource/954925453910