Micro-CT-based improvement of geometrical and mechanical controllability of selective laser melted Ti6Al4V porous structures

Van Bael, Simon;Kerckhofs, Greet;Moesen, Maarten;Pyka, Grzegorz;Kruth, Jean-Pierre;et.al.
(2011) Materials Science and Engineering A, Structural Materials: Properties, Microstructure and Processing — Vol. 528, n° 24, p. 7423-7431 (2011)

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Abstract
This work aimed at optimizing the robustness and controllability of the production of porous Ti6Al4V structures using selective laser melting (SLM) by reducing the mismatch between designed and as-produced morphological and mechanical properties in two runs. In the first run, porous Ti6Al4V structures with different pore sizes were designed, manufactured by SLM, analyzed by microfocus X-ray computed tomography (micro-CT) image analysis and compared to the original design. The comparison was based on the following morphological parameters: pore size, strut thickness, porosity, surface area and structure volume. Based on correlations between designed and measured properties, their mismatch was in the second run decreased significantly from 45% to 5% for pore size. The demonstrated protocol is furthermore applicable to other 3D structures, properties and production techniques
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Van Bael, S., Kerckhofs, G., Moesen, M., Pyka, G., Schrooten, J., & Kruth, J.-P. (2011). Micro-CT-based improvement of geometrical and mechanical controllability of selective laser melted Ti6Al4V porous structures. Materials Science and Engineering A, Structural Materials: Properties, Microstructure and Processing, 528(24), 7423-7431. https://hdl.handle.net/2078.5/236667 (Original work published 2011)