Comparison study on additive manufacturing (AM) and powder metallurgy (PM) AlSi10Mg alloys

Comparison study on additive manufacturing (AM) and powder metallurgy (PM) AlSi10Mg alloys

The microstructural and mechanical properties of AlSi10Mg alloys fabricated by additive manufacturing (AM) and powder metallurgy (PM) routes were investigated and compared. The microstructures were examined by scanning electron microscopy assisted with electron-dispersive spectroscopy. The crystalli...

Ausführliche Beschreibung

Bibliographische Detailangaben
Hauptverfasser: Chen, Biao, Moon, Seung Ki, Yao, Xiling, Bi, Guijun, Shen, Jianghua, Umeda, Junko, Kondoh, Katsuyoshi
Weitere Verfasser: School of Mechanical and Aerospace Engineering
Format: Journal Article
Sprache:English
Veröffentlicht: 2020
Schlagworte:
Engineering::Materials
Additive Manufacturing
AlSi10Mg Alloys
Online Zugang:https://hdl.handle.net/10356/142122
Beschreibung
Zusammenfassung:The microstructural and mechanical properties of AlSi10Mg alloys fabricated by additive manufacturing (AM) and powder metallurgy (PM) routes were investigated and compared. The microstructures were examined by scanning electron microscopy assisted with electron-dispersive spectroscopy. The crystalline features were studied by x-ray diffraction and electron backscatter diffraction. Room-temperature tensile tests and Vickers hardness measurements were performed to characterize the mechanical properties. It was found that the AM alloy had coarser Al grains but much finer Si precipitates compared with the PM alloy. Consequently, the AM alloy showed more than 100% increment in strength and hardness compared with the PM alloy due to the presence of ultrafine forms of Si, while exhibiting moderate ductility.

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