Materials 2013, 6(3), 856-869; doi:10.3390/ma6030856
From Powders to Dense Metal Parts: Characterization of a Commercial AlSiMg Alloy Processed through Direct Metal Laser Sintering
1
Center for Space Human Robotics @Polito, Istituto Italiano di Tecnologia, Corso Trento 21, Torino 10129, Italy
2
Department of Management and Production Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
3
Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
*
Author to whom correspondence should be addressed.
Received: 24 December 2012 / Revised: 25 February 2013 / Accepted: 1 March 2013 / Published: 6 March 2013
Abstract
In this paper, a characterization of an AlSiMg alloy processed by direct metal laser sintering (DMLS) is presented, from the analysis of the starting powders, in terms of size, morphology and chemical composition, through to the evaluation of mechanical and microstructural properties of specimens built along different orientations parallel and perpendicular to the powder deposition plane. With respect to a similar aluminum alloy as-fabricated, a higher yield strength of about 40% due to the very fine microstructure, closely related to the mechanisms involved in this additive process is observed.Keywords:
additive manufacturing (AM); direct metal laser sintering (DMLS); aluminum alloys; light microscopy; electron microscopy; mechanical characterization
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MDPI and ACS Style
Manfredi, D.; Calignano, F.; Krishnan, M.; Canali, R.; Ambrosio, E.P.; Atzeni, E. From Powders to Dense Metal Parts: Characterization of a Commercial AlSiMg Alloy Processed through Direct Metal Laser Sintering. Materials 2013, 6, 856-869.
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