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Reducing porosity in AlSi10Mg parts processed by selective laser melting

Aboulkhair, Nesma T.; Everitt, Nicola M.; Ashcroft, Ian; Tuck, Christopher

Authors

Nicola M. Everitt

IAN ASHCROFT Ian.Ashcroft@nottingham.ac.uk
Professorof Mechanics of Solids



Abstract

Selective laser melting (SLM) is widely gaining popularity as an alternative manufacturing technique for complex and customized parts. SLM is a near net shape process with minimal post processing machining required dependent upon final application. The fact that SLM produces little waste and enables more optimal designs also raises opportunities for environmental advantages. The use of aluminium (Al) alloys in SLM is still quite limited due to difficulties in processing that result in parts with high degrees of porosity. However, Al alloys are favoured in many high-end applications for their exceptional strength and stiffness to weight ratio meaning that they are extensively used in the automotive and aerospace industries. This study investigates the windows of parameters required to produce high density parts from AlSi10Mg alloy using selective laser melting. A compromise between the different parameters and scan strategies was achieved and used to produce parts achieving a density of 99.8%.

Journal Article Type Article
Publication Date 2014-10
Journal Additive Manufacturing
Print ISSN 2214-7810
Electronic ISSN 2214-8604
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 1-4
Pages 77-86
APA6 Citation Aboulkhair, N. T., Everitt, N. M., Ashcroft, I., & Tuck, C. (2014). Reducing porosity in AlSi10Mg parts processed by selective laser melting. Additive Manufacturing, 1-4, 77-86. https://doi.org/10.1016/j.addma.2014.08.001
DOI https://doi.org/10.1016/j.addma.2014.08.001
Keywords Additive manufacturing; selective laser melting; Al alloys; AlSi10Mg; porosity; microstructure
Publisher URL http://dx.doi.org/10.1016/j.addma.2014.08.001
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
Additional Information This article is maintained by: Elsevier; Article Title: Reducing porosity in AlSi10Mg parts processed by selective laser melting; Journal Title: Additive Manufacturing; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.addma.2014.08.001; Content Type: article; Copyright: Copyright © 2014 The Authors. Published by Elsevier B.V.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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