Particle-Melt Pool Interactions in Multi-Material Laser Based Directed Energy Deposition

dc.creatorSellers, R.
dc.creatorGould, B.
dc.creatorWolff, S.
dc.date.accessioned2021-12-06T23:17:52Z
dc.date.available2021-12-06T23:17:52Z
dc.date.issued2021
dc.description.abstractLaser based metal directed energy deposition (DED) is an additive manufacturing process that is currently on the rise in the industry. However, there is still a knowledge gap in the understanding of fundamental interactions between particles and the melt pool in the DED process and how to change the parameters to alter microstructure. This work utilized synchronized in-situ thermal and X-ray imaging to understand the anomalous behavior of molybdenum powder binding onto a Ti-6Al-4V substrate as fundamental understanding for layer-by-layer processing. Using these visual techniques, particle velocity, mass, surface energy, kinetic energy, contact area, and temperature were observed and calculated. The correlation is shown and recorded to understand the wettability of particles and why some will bounce off of the substrate while others enter the melt pool. This work will allow for the manipulation of particle-melt pool interactions in DED which will help reproduce and build better parts more efficientlyen_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/90713
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/17632
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2021 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectadditive manufacturingen_US
dc.subjectdirected energy depositionen_US
dc.subjectTi-6Al-4Ven_US
dc.subjectx-ray imagingen_US
dc.subjectthermal imagingen_US
dc.subjectmolybdenumen_US
dc.subjectsurface energyen_US
dc.titleParticle-Melt Pool Interactions in Multi-Material Laser Based Directed Energy Depositionen_US
dc.typeConference paperen_US

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