NDLI: The Fracture Behavior and Mechanical Properties of a Support Structure for Additive Manufacturing of Ti-6Al-4V

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The Fracture Behavior and Mechanical Properties of a Support Structure for Additive Manufacturing of Ti-6Al-4V

Content Provider	MDPI
Author	Tom, Schäfer Weber, Sebastian Montero, Joaquin Petroll, Christoph Bleckmann, Matthias Paetzold, Kristin
Copyright Year	2020
Description	In the laser powder bed fusion processes for metal additive manufacturing, a support structure is needed to fix the part to the base plate and to support overhanging regions. Currently the importance of support structure for a successful build process is often underestimated and some effects are not yet well understood. Therefore, this study investigates the fracture behavior and mechanical properties of thin additive manufactured struts using the titanium alloy Ti-6Al-4V and specific machine parameters for support structures. Tensile tests were performed for different strut diameters and the fracture surfaces were analyzed using a laser microscope and a scanning electron microscope. Additionally, the porosity was examined with micro-CT scans. The results were compared with a different set of parameters used for solid parts. The experiments revealed that struts produced with support parameters had no significantly lower tensile strength than the comparative parts. Despite that, some porosity and around two percent of defects on the fracture surface for parts using the solid parameter set have been found. Parts with support parameters show no porosity, even though the energy density is around 30% lower compared to the solid parameter set.
Starting Page	343
e-ISSN	20734352
DOI	10.3390/cryst10050343
Journal	Crystals
Issue Number	5
Volume Number	10
Language	English
Publisher	MDPI
Publisher Date	2020-04-27
Access Restriction	Open
Subject Keyword	Crystals Manufacturing Engineering Support Structure Additive Manufacturing Powder Bed Fusion Titanium Alloy Ti-6al-4v Fracture Behavior Mechanical Properties
Content Type	Text
Resource Type	Article

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