Spatial inhomogeneity of build defects across the build plate in laser powder bed fusion
The population of build defects as a function of position on the build plate was examined in
Ti-6Al-4V specimens fabricated on two common commercial laser powder bed fusion (LPBF)
systems. Using standard build parameters, X-ray computed tomography revealed that
spatial heterogeneity of the defect population can be substantial, relative to the variations in
defect population that can occur due to other parameters, eg part geometry, build
orientation, and laser power schedule. To understand the potential importance of such …
Ti-6Al-4V specimens fabricated on two common commercial laser powder bed fusion (LPBF)
systems. Using standard build parameters, X-ray computed tomography revealed that
spatial heterogeneity of the defect population can be substantial, relative to the variations in
defect population that can occur due to other parameters, eg part geometry, build
orientation, and laser power schedule. To understand the potential importance of such …
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