Evaluation of surface/interface quality,microstructure and mechanical properties of hybrid additive-subtractive aluminium parts |
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| Authors: | Debajyoti Bhaduri Pavel Penchev Khamis Essa Stefan Dimov Luke N Carter Catalin I Pruncu Daniele Pullini |
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| Affiliation: | 1. School of Engineering, Cardiff University, Queen’s Buildings, The Parade, Cardiff CF24 3AA, UK;2. Department of Mechanical Engineering, School of Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;3. School of Metallurgy and Materials, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;4. Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK;5. C.R.F ScPA., Sede legale e amministrativa: Strada Torino, 50, 10043 Orbassano, TO, Italy |
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| Abstract: | A disadvantage of selective laser melting (SLM) processes for the manufacture of large parts is their slow build time per unit volume. A hybrid route is to generate core simple shapes traditionally, for example by machining, followed by adding final features by SLM. Here the mechanical integrity of such hybrid parts is studied, choosing the building of AlSi10Mg by SLM on a machined AA6082 base, in the shape of a tensile test piece, as a simple example. These materials are chosen for their relevance to lightweight parts. As-built parts fail at the SLM/machined interface but standard heat treatments transfer failures to the machined material. Optimised SLM processing conditions and microstructures of the SLM and interfacial regions are reported. |
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| Keywords: | Corresponding author at: School of Engineering Cardiff University Queen’s Buildings The Parade Cardiff CF24 3AA UK Additive manufacturing Selective laser melting (SLM) Aluminium |
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