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In situ experimental measurements of the laser powder bed fusion build process are completed with the goal gaining insight into the evolution of distortion in the powder bed fusion build process. Utilizing a novel enclosed instrumented system, five experimental builds are performed. Experimental builds compare materials: Ti–6Al–4V and Inconel® 718, differing build geometries, and manufacturing machines:...
A model for predicting the thermal response of Inconel® 718 during laser powder-bed fusion processing (LPBF) is developed. The approach includes the pre-placed powder layer in the analysis by initially assigning powder properties to the top layer of elements before restoring the solid properties as the heat source traverses the layer. Different linear heat inputs are examined by varying both laser...
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