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Effect of process parameters on the density and porosity of laser melted AlSi10Mg/SiC metal matrix composite

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Abstract

Laser melting of aluminium alloy—AlSi10Mg has increasingly been used to create specialised products in various industrial applications, however, research on utilising laser melting of aluminium matrix composites in replacing specialised parts have been slow on the uptake. This has been attributed to the complexity of the laser melting process, metal/ceramic feedstock for the process and the reaction of the feedstock material to the laser. Thus, an understanding of the process, material microstructure and mechanical properties is important for its adoption as a manufacturing route of aluminium metal matrix composites. The effects of several parameters of the laser melting process on the mechanical blended composite were thus investigated in this research. This included single track formations of the matrix alloy and the composite alloyed with 5% and 10% respectively for their reaction to laser melting and the fabrication of density blocks to investigate the relative density and porosity over different scan speeds. The results from these experiments were utilised in determining a process window in fabricating near-fully dense parts.

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Authors and Affiliations

  1. Faculty of Science and Engineering, School of Engineering, Telford Campus, University of Wolverhampton, WV1 1LY, Wolverhampton, UK

    Omotoyosi H. Famodimu, Mark Stanford, Chike F. Oduoza & Lijuan Zhang

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  1. Omotoyosi H. Famodimu
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  2. Mark Stanford
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  3. Chike F. Oduoza
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  4. Lijuan Zhang
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Correspondence to Omotoyosi H. Famodimu.

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Famodimu, O.H., Stanford, M., Oduoza, C.F. et al. Effect of process parameters on the density and porosity of laser melted AlSi10Mg/SiC metal matrix composite. Front. Mech. Eng. 13, 520–527 (2018). https://doi.org/10.1007/s11465-018-0521-y

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  • DOI: https://doi.org/10.1007/s11465-018-0521-y

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