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tammas-williams s, zhao h, le´onard f, et al. xct analysis of the influence of melt strategies on defect population in ti–6al–4v components manufactured by selective electron beam melting. mater charact 2015;102:47–61.

Sagot :

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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