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Influence of alumin...
Influence of aluminium powder aging on Directed Energy deposition
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- Da Silva, Adrien (författare)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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- Belelli, Filippo (författare)
- Department of Mechanical Engineering, Politecnico di Milano, 1 Via Privata Giuseppe La Masa, 20156 Milano, Italy
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- Lupi, Giorgia (författare)
- Department of Mechanical Engineering, Politecnico di Milano, 1 Via Privata Giuseppe La Masa, 20156 Milano, Italy
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- Bruzzo, Francesco (författare)
- Fraunhofer, Institut für Werkstoff und Strahltechnik, Winterbergstraße 28, 01277 Dresden, Germany
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- Brandau, Benedikt (författare)
- Luleå tekniska universitet,Produkt- och produktionsutveckling,System Development Advanced Manufacturing, JENOPTIK Optical Systems GmbH, Göschwitzerstraße 25, 07745 Jena, Germany
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- Maier, Lukas (författare)
- IMR – Metal Powder Technologies GmbH, Jessenigstraße 4, 9220 Lind ob Velden, Austria
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- Pesl, Alexander (författare)
- IMR – Metal Powder Technologies GmbH, Jessenigstraße 4, 9220 Lind ob Velden, Austria
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- Frostevarg, Jan, Teknologie doktor, 1982- (författare)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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- Casati, Riccardo (författare)
- Department of Mechanical Engineering, Politecnico di Milano, 1 Via Privata Giuseppe La Masa, 20156 Milano, Italy
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- Lopez, Elena (författare)
- Fraunhofer, Institut für Werkstoff und Strahltechnik, Winterbergstraße 28, 01277 Dresden, Germany
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- Kaplan, Alexander (författare)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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(creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
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Ingår i: Materials & design. - : Elsevier. - 0264-1275 .- 1873-4197. ; 218
- Relaterad länk:
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https://doi.org/10.1...
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https://ltu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The use of aluminium alloys for Additive Manufacturing is of high interest for advanced geometries and lightweight applications. In Directed Energy Deposition, a powder stock is processed with a laser beam, which offers a high process flexibility. However, aging of the powder feedstock during storage or after recycling remains fundamentally challenging for aluminium alloys because of their sensitivity to oxida-tion and porosity. In order to investigate these effects, AlSi10Mg powder batches were aged in different conditions and processed by Directed Energy Deposition. The results showed that powder aging does not significantly change the particle size or morphology, but it introduces more oxygen and hydrogen in the powder. The oxidation of the particles reduces the laser beam absorbance of the powder and increases wetting of the melt pool, which affects the track geometry. A 3.5 to 4.2 times higher porosity was observed in the material deposited from aged powder, which are most likely hydrogen pores causedby the increased hydrogen content in the aged powder. The tensile properties of the parts built with aged powder showed 19.0% lower yield strength, 14.2% lower ultimate strength and 99.2% higher elongation, which are most likely the results of the coarser microstructure and increased porosity.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Nyckelord
- Direct Metal Deposition
- Laser Metal Deposition
- Laser Powder Bed Fusion
- Oxidation
- Porosity
- Manufacturing Systems Engineering
- Produktionsutveckling
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Da Silva, Adrien
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Belelli, Filippo
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Lupi, Giorgia
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Bruzzo, Francesc ...
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Brandau, Benedik ...
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Maier, Lukas
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visa fler...
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Pesl, Alexander
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Frostevarg, Jan, ...
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Casati, Riccardo
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Lopez, Elena
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Kaplan, Alexande ...
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visa färre...
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