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Materials 2017, 10(1), 76; doi:10.3390/ma10010076

On the Selective Laser Melting (SLM) of the AlSi10Mg Alloy: Process, Microstructure, and Mechanical Properties

1
DISAT, Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
2
Centre for Sustainable Future Technologies @PoliTo, Istituto Italiano di Tecnologia, Corso Trento 21, 10129 Torino, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Guillermo Requena
Received: 21 October 2016 / Revised: 10 January 2017 / Accepted: 12 January 2017 / Published: 18 January 2017
(This article belongs to the Special Issue Metals for Additive Manufacturing)
View Full-Text   |   Download PDF [41922 KB, uploaded 18 January 2017]   |  

Abstract

The aim of this review is to analyze and to summarize the state of the art of the processing of aluminum alloys, and in particular of the AlSi10Mg alloy, obtained by means of the Additive Manufacturing (AM) technique known as Selective Laser Melting (SLM). This process is gaining interest worldwide, thanks to the possibility of obtaining a freeform fabrication coupled with high mechanical properties related to a very fine microstructure. However, SLM is very complex, from a physical point of view, due to the interaction between a concentrated laser source and metallic powders, and to the extremely rapid melting and the subsequent fast solidification. The effects of the main process variables on the properties of the final parts are analyzed in this review: from the starting powder properties, such as shape and powder size distribution, to the main process parameters, such as laser power and speed, layer thickness, and scanning strategy. Furthermore, a detailed overview on the microstructure of the AlSi10Mg material, with the related tensile and fatigue properties of the final SLM parts, in some cases after different heat treatments, is presented. View Full-Text
Keywords: Additive Manufacturing (AM); Selective Laser Melting (SLM); AlSi10Mg; microstructure; mechanical properties Additive Manufacturing (AM); Selective Laser Melting (SLM); AlSi10Mg; microstructure; mechanical properties
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MDPI and ACS Style

Trevisan, F.; Calignano, F.; Lorusso, M.; Pakkanen, J.; Aversa, A.; Ambrosio, E.P.; Lombardi, M.; Fino, P.; Manfredi, D. On the Selective Laser Melting (SLM) of the AlSi10Mg Alloy: Process, Microstructure, and Mechanical Properties. Materials 2017, 10, 76.

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