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

被引：34

作者：

Aversa, Alberta ^{[1
]}

Marchese, Giulio ^{[1
]}

Manfredi, Diego ^{[2
]}

Lorusso, Massimo ^{[2
]}

Calignano, Flaviana ^{[3
]}

Biamino, Sara ^{[1
,2
]}

Lombardi, Mariangela ^{[1
,2
]}

Fino, Paolo ^{[1
]}

Pavese, Matteo ^{[1
]}

机构：

[1] Politecn Torino, Dept Appl Sci & Technol, Corso Duca Abruzzi 24, I-10129 Turin, Italy

[2] Ist Italiano Tecnol, Ctr Sustainable Futures Technol CSFT POLITO, Corso Trento 21, I-10129 Turin, Italy

[3] Politecn Torino, Dept Management & Prod Engn DIGEP, Corso Duca Abruzzi 24, I-10129 Turin, Italy

来源：

METALS | 2018年 / 8卷 / 05期

关键词：

Laser Powder Bed Fusion (LPBF); Additive Manufacturing (AM); 7075 aluminum alloy; high strength; mechanical properties; MECHANICAL-PROPERTIES; MICROSTRUCTURE; MODE;

D O I：

10.3390/met8050300

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

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