2016
DOI: 10.1007/s11666-016-0495-4
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Additive Manufacturing of AlSi10Mg Alloy Using Direct Energy Deposition: Microstructure and Hardness Characterization

Abstract: This paper aims to study the manufacturing of the AlSi10Mg alloy with direct energy deposition (DED) process. Following fabrication, the macro-and microstructural evolution of the as-processed specimens was initially investigated using optical microscopy and scanning electron microscopy. Columnar dendritic structure was the dominant solidification feature of the deposit; nevertheless, detailed microstructural analysis revealed cellular morphology near the substrate and equiaxed dendrites at the top end of the … Show more

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Cited by 88 publications
(38 citation statements)
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References 21 publications
(8 reference statements)
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“…Figure 2a showed cellular and dendritic growth, which was also observed in the optical microstructure. Wu et al [22] attributed these cellular growths as long cells that are formed as a result of cooling conditions in place of dendrites. The dark region seen in Figure 2b,c was drastically eradicated in Figure 2e,f, where more silicon and aluminum were visible.…”
Section: Electron Backscatter Diffraction (Ebsd)mentioning
confidence: 99%
See 3 more Smart Citations
“…Figure 2a showed cellular and dendritic growth, which was also observed in the optical microstructure. Wu et al [22] attributed these cellular growths as long cells that are formed as a result of cooling conditions in place of dendrites. The dark region seen in Figure 2b,c was drastically eradicated in Figure 2e,f, where more silicon and aluminum were visible.…”
Section: Electron Backscatter Diffraction (Ebsd)mentioning
confidence: 99%
“…The dark region seen in Figure 2b,c was drastically eradicated in Figure 2e,f, where more silicon and aluminum were visible. These dark regions, according to Wu et al [22] and Mathe et al [6], are aluminum grains that also contain Al-Si eutectic, which is difficult to distinguish from cell boundaries because of the disappearance of diffraction data. Figure 2d has developed roughness on its surface that looks "pimple" like as compared to Figure 2a before stress relief.…”
Section: Electron Backscatter Diffraction (Ebsd)mentioning
confidence: 99%
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“…Some approaches are based on modelling and measuring the melt pool dimensions, and on the understanding of their overlapping, others select the process parameters based on bulk components' porosity, geometrical accuracy, or microstructure and mechanical properties [5,[11][12][13][14]. Recently LMD 2 of 11 has been successfully used to process different alloys such as AlSi10Mg, Ti6Al4V, IN625 and 316L SS, showing several promising results [15][16][17][18]. In particular, some studies focused on the mechanical and microstructural characterisation of steel samples built by LMD and on the influence of process parameters on its mechanical behaviour.…”
Section: Introductionmentioning
confidence: 99%