| Author | Search for: Delbergue, D.1; Search for: Côté, R.2; Search for: Chandoul, A.1; Search for: Boudeau, L.; Search for: Bernier, J.1; Search for: Pelletier, R.1; Search for: Lefebvre, L. P.1; Search for: Thomas, Y.1; Search for: Demers, V. |
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| Affiliation | - National Research Council of Canada. Automotive and Surface Transportation
- National Research Council of Canada. Design and Fabrication Services
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| Format | Text, Article |
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| Conference | International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2023, June 18-21, 2023, Las Vegas, NV, USA |
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| Abstract | Material extrusion (MEX) of metallic feedstock has received an increase of interest in the past 5 years. In this additive manufacturing process, a mixture of sacrificial polymeric binder is highly-filled with metallic powder (similarly to those developed for metal injection molding) and then printed layer-by-layer to shape green parts. The printed part is then debound and sintered to remove the binder and densify the final metallic part. The quantity and occurrence of adhesion defects and voids can be minimized or avoided by controlling the feedstock viscosity. As many aluminum alloys can be difficult to print using laser powder bed fusion (L-PBF) and the productivity is still rather limited with L-PBF, MEX process becomes an interesting alternative to fabricate complex-shape aluminum parts at high volume. However, such kind of aluminum-based powder-binder mixtures are simply absent from the market or scientific literature. This study aims to develop aluminum-based (AlSi10Mg) feedstocks used in MEX 3D printing. Rheological analysis will be used to correlate the feedstock viscosity with its printability. 3D printing will be performed using a laboratory plunger-based printer, while Archimedes density and SEM observations will be used to quantify the performances of such aluminum-based feedstocks. |
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| Publication date | 2023-06-18 |
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| Publisher | Metal Powder Industries Federation |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | f11b807a-ac3b-424e-b386-9c9d28da803f |
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| Record created | 2023-07-12 |
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| Record modified | 2023-07-12 |
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