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SEM images of top surface of sample (a) #3 and (b) #21.

SEM images of top surface of sample (a) #3 and (b) #21.

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Figure 1. Process parameters used for Maraging steel grade 300.
Figure 2. SEM images of top surface of sample (a) #3 and (b) #21.
AM process parameters, relative density and surface texture parameters...
Effect of process parameters on the surface topography formation in precision additive metal manufacturing
Conference Paper
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  • Aug 2020
The typical surface topography of parts produced by additive manufacturing differs from those produced by conventional manufacturing. During the powder bed fusion process, spatter particles may eject from the melt pool due to multi-physics phenomena. These spatter particles can have an impact on the part quality as large spatter particles that land...
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... the other hand, when the scan speed is increased, the melt pool size breaks down due to high surface tension, so the surface roughness can be expected to increase. Figure 2 shows the continuous melt pool and cold spatter on surface of the sample #3 having the highest relative density of 99.10% and the discontinuous melt pool and hot spatters on surface of sample #21 that has the lowest relative density of 93.26%. ...