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On the effect of process parameters on properties of AlSi10Mg parts produced by DMLS

Manickavasagam Krishnan (Center for Space Human Robotics @POLITO and DIGEP—Dipartimento di Ingegneria Gestionale e della Produzione, Istituto Italiano di Tecnologia, Torino, Italy)
Eleonora Atzeni (DIGEP—Department of Management and Production Engineering, Politecnico di Torino, Torino, Italy)
Riccardo Canali (Center for Space Human Robotics IIT@Polito, Istituto Italiano di Tecnologia, Torino, Italy and DISAT—Department of Applied Science and Technology, Politecnico di Torino, Torino, Italy)
Flaviana Calignano (Center for Space Human Robotics IIT @Polito, Istituto Italiano di Tecnologia, Torino, Italy)
Diego Manfredi (Center for Space Human Robotics IIT @Polito, Istituto Italiano di Tecnologia, Torino, Italy)
Elisa Paola Ambrosio (Center for Space Human Robotics IIT @Polito, Istituto Italiano di Tecnologia, Torino, Italy)
Luca Iuliano (DIGEP—Dipartimento di Ingegneria Gestionale e della Produzione, Politecnico di Torino, Torino, Italy)

Rapid Prototyping Journal

ISSN: 1355-2546

Article publication date: 20 October 2014

2062

Abstract

Purpose

The aim of this research is to reach a deep understanding on the effect of the process parameters of Direct Metal Laser Sintering process (DMLS) on macroscopic properties (hardness and density) of AlSi10Mg parts and resulting microstructure.

Design/methodology/approach

A full factorial design of experiment (DOE) was applied to determine the most significant process parameter influencing macroscopic properties of AlSi10Mg parts manufactured by DMLS process. The analysis aims to define the optimum process parameters and deduce the process window that provides better macroscopic properties of AlSi10Mg parts. Optical microscopy observations are carried out to link the microstructure to macroscopic properties.

Findings

Macroscopic properties of DMLS parts are influenced by the change in process parameters. There is a close correlation between the geometry of scan tracks and macroscopic properties of AlSi10Mg parts manufactured by DMLS process.

Originality/value

The knowledge of utilizing optimized process parameters is important to fabricate DMLS parts with better mechanical properties. The present research based on applying experimental design is the first analysis for AlSi10Mg parts produced in DMLS process.

Keywords

Citation

Krishnan, M., Atzeni, E., Canali, R., Calignano, F., Manfredi, D., Ambrosio, E.P. and Iuliano, L. (2014), "On the effect of process parameters on properties of AlSi10Mg parts produced by DMLS", Rapid Prototyping Journal, Vol. 20 No. 6, pp. 449-458. https://doi.org/10.1108/RPJ-03-2013-0028

Publisher

:

Emerald Group Publishing Limited

Copyright © 2014, Emerald Group Publishing Limited

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