A Preliminary Examination of Variability Due to Build Location and Powder Feedstock in Additive Manufacture of Inconel 718 using Laser-Based Powder Bed Fusion

dc.creatorSaint John, David B.
dc.creatorJoshi, Sanjay B.
dc.creatorSimpson, Timothy W.
dc.creatorQu, Meng
dc.creatorRowatt, John David
dc.creatorLou, Yucun
dc.date.accessioned2021-10-26T20:21:52Z
dc.date.available2021-10-26T20:21:52Z
dc.date.issued2016
dc.description.abstractThe production of metallic parts by additive manufacturing (AM) is of significant interest to industry, but in the absence of standards, practical design considerations for manufacturing engineers are not widely known. Within the context of powder bed fusion (PBF), many unknowns persist regarding variations in part quality due to part location on the build plate, process consistency, feedstock supplier, and machine manufacturer. In this paper, we investigate the mechanical property variance across the build platform and document the successful use of feedstock powders obtained from several suppliers for the manufacture of Inconel 718 tensile and Charpy specimens, built on an EOS M280 laser-based powder bed fusion system. Particular emphasis is placed on describing the manufacturing process design challenges encountered even for simple geometries. While many advocate that complexity is free when using AM, we find that AM can lead to expensive build failures given the current state of manufacturing process knowledge and that design for additive manufacture is required for successful application of AM techniques.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/89576
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2016 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectlaser-based powder bed fusionen_US
dc.subjectadditive manufacturingen_US
dc.subjectInconel 718en_US
dc.subjectfeedstock powdersen_US
dc.subjectbuild locationen_US
dc.subjectvariabilityen_US
dc.titleA Preliminary Examination of Variability Due to Build Location and Powder Feedstock in Additive Manufacture of Inconel 718 using Laser-Based Powder Bed Fusionen_US
dc.typeConference paperen_US

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