Effects of Build Orientation and Heat Treatment on the Porosity Distribution and Morphology within Inconel 625 Fabricated via Laser Powder Bed Fusion

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dc.creatorAndurkar, Mohanish
dc.creatorProrok, Bart
dc.creatorGahl, John
dc.creatorThompson, Scott
dc.date.accessioned2024-03-25T23:46:29Z
dc.date.available2024-03-25T23:46:29Z
dc.date.issued2023
dc.description.abstractThe effects of build orientation, i.e., vertical, or diagonal (45º), and heat treatment on the porosity characteristics within Inconel 625 (IN625) fabricated via laser powder bed fusion (LPBF) was experimentally investigated. Selected samples were heat treated at 1050 ℃ for 1-hour to promote evolution of pores. X-Ray Computed Tomography (XCT) was performed on samples to generate three-dimensional porosity maps. Volume Graphics (VG) software was used to inspect and quantify porosity distributions. Results indicate that build orientation and heat treatment influence measured porosity count. As-built (no heat treatment) sample microstructure was observed to have lower porosity count when compared to heat-treated samples. The vertically built sample was observed to have lower porosity relative to its diagonally built counterpart. The porosity morphology or diameter was observed to vary after heat treatment. On the other hand, the sphericity of pores was not affected by different build orientation and heat treatment.
dc.description.departmentMechanical Engineering
dc.identifier.urihttps://hdl.handle.net/2152/124343
dc.identifier.urihttps://doi.org/10.26153/tsw/50951
dc.language.isoen_US
dc.publisherUniversity of Texas at Austin
dc.relation.ispartof2023 International Solid Freeform Fabrication Symposium
dc.rights.restrictionOpen
dc.subjectlaser powder bed fusion
dc.subjectx-ray CT
dc.subjectporosity measurements
dc.subjectpore morphology
dc.titleEffects of Build Orientation and Heat Treatment on the Porosity Distribution and Morphology within Inconel 625 Fabricated via Laser Powder Bed Fusion
dc.typeConference paper

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2023 International Solid Freeform Fabrication Symposium