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Open AccessArticle

Laser Powder Bed Fusion of a High Strength Al-Si-Zn-Mg-Cu Alloy

1
Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
2
Center for Sustainable Futures [email protected], Istituto Italiano di Tecnologia, Corso Trento 21, 10129 Torino, Italy
3
Department of Management and Production Engineering (DIGEP), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
*
Author to whom correspondence should be addressed.
Metals 2018, 8(5), 300; https://doi.org/10.3390/met8050300
Received: 14 March 2018 / Revised: 18 April 2018 / Accepted: 24 April 2018 / Published: 26 April 2018
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Abstract

Al-Si-Zn-Mg-Cu samples were produced using Laser Powder Bed Fusion from mixed AlSi10Mg and 7075 powders. It was observed that the introduction of silicon to an Al-Zn-Mg-Cu alloy strongly reduced the crack density, probably because of the reduction of the solidification range, the improved fluidity of the molten phase and the reduction of the coefficient of thermal expansion. The density measurements showed that crack-free samples can be successfully produced with this powder mixture. The obtained Al-Si-Zn-Mg-Cu samples were characterized in terms of microstructure, hardness and tensile properties showing that this composition is very promising for future powder bed additive manufacturing processes. View Full-Text
Keywords: Laser Powder Bed Fusion (LPBF); Additive Manufacturing (AM); 7075 aluminum alloy; high strength; mechanical properties Laser Powder Bed Fusion (LPBF); Additive Manufacturing (AM); 7075 aluminum alloy; high strength; mechanical properties
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Aversa, A.; Marchese, G.; Manfredi, D.; Lorusso, M.; Calignano, F.; Biamino, S.; Lombardi, M.; Fino, P.; Pavese, M. Laser Powder Bed Fusion of a High Strength Al-Si-Zn-Mg-Cu Alloy. Metals 2018, 8, 300.

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