A promising powder bed additive manufacturing process for producing high-value titanium components in close to net shape is called selective electron beam melting (SEBM).
However, the existence of porosity now dominates the fatigue life of SEBM parts without post-manufacturing Hipping. Using X-ray computed tomography, the size, volume percentage, and spatial distribution of the pores in model samples have been characterized in 3D and connected to the process variables in this study. A strong correlation was discovered between the various beam techniques used to contour and infill by hatching a component section and the average volume percentage of the pores (0.2%), which was found to be lower than that typically observed in competing processes like selective laser melting.
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