Reducing porosity in AlSi10Mg parts processed by selective laser melting

Aboulkhair, Nesma T. and Everitt, Nicola M. and Ashcroft, Ian and Tuck, Christopher (2014) Reducing porosity in AlSi10Mg parts processed by selective laser melting. Additive Manufacturing, 1-4 . pp. 77-86. ISSN 2214-8604

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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%.

Item Type: Article
Keywords: Additive manufacturing; selective laser melting; Al alloys; AlSi10Mg; porosity; microstructure
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering
Identification Number: https://doi.org/10.1016/j.addma.2014.08.001
Depositing User: Eprints, Support
Date Deposited: 21 May 2016 16:59
Last Modified: 14 Sep 2016 09:14
URI: http://eprints.nottingham.ac.uk/id/eprint/33426

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