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Oxidation in wire a...
Oxidation in wire arc additive manufacturing of aluminium alloys
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- Hauser, Tobias (författare)
- Luleå tekniska universitet,Produkt- och produktionsutveckling,Technology, Siemens AG, D-81739 Munich, Germany
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- Reisch, Raven T. (författare)
- Chair of Robotics, Artificial Intelligence and Real-time Systems, Technical University of Munich, D-80333 Munich, Germany. Technology, Siemens AG, D-81739 Munich, Germany
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- Breese, Philipp P. (författare)
- Coating Technology, TU Berlin, Pascalstr. 8-9, 10587 Berlin, Germany. Technology, Siemens AG, D-81739 Munich, Germany
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- Nalam, Yogesh (författare)
- Technology, Siemens AG, D-81739 Munich, Germany
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- Joshi, Kaivalya S. (författare)
- Technology, Siemens AG, D-81739 Munich, Germany
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- Bela, Katharina (författare)
- Technology, Siemens AG, D-81739 Munich, Germany
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- Kamps, Tobias (författare)
- Technology, Siemens AG, D-81739 Munich, Germany
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- Volpp, Joerg (författare)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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- Kaplan, Alexander F.H. (författare)
- Luleå tekniska universitet,Produkt- och produktionsutveckling
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(creator_code:org_t)
- Elsevier, 2021
- 2021
- Engelska.
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Ingår i: Additive Manufacturing. - : Elsevier. - 2214-8604 .- 2214-7810. ; 41
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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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
- Wire Arc Additive Manufacturing is a near-net-shape machining technology that enables low-cost production of large and customised metal parts. In the present work, oxidation effects in Wire Arc Additive Manufacturing of the aluminium alloy AW4043/AlSi5(wt%) were investigated. Two main oxidation effects, the surface oxidation on aluminium parts and the oxidation anomalies in aluminium parts were observed and analysed. The surface oxidation on aluminium parts changed its colour during Wire Arc Additive Manufacturing from transparent to white. In the present work, it was shown by high-speed imaging that this change in the surface oxidation took place in the process zone, which was covered by inert gas. Since the white surface oxidation formed in an inert gas atmosphere, it was found that the arc interacts with the existing amorphous oxide layer of the previously deposited layer and turns it into a white duplex (crystalline and amorphous) oxide layer. In addition to the analysis of the white surface oxidation, oxidation anomalies, which occur at low shielding from the environment, were investigated. It was shown by physical experiments and Computational Fluid Dynamics simulations, that these oxidation anomalies occur at inadequate gas flow rates, too big nozzle-to-work distances, process modes with too high heat input, or too high wire feed rates. Finally, a monitoring method based on light emission spectroscopy was used to detect oxidation anomalies as they create peaks in the spectral emission when they occur.
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 energy deposition
- WAAM
- Surface oxidation
- Anomalies
- In-situ monitoring
- Produktionsutveckling
- Manufacturing Systems Engineering
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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