Computational Modeling and Experimental Validation of Microstructural Development in Superalloy CMSx-4 Processed through Scanning Laser Epitaxy

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dc.creatorAcharya, Ranadip
dc.creatorBansal, Rohan
dc.creatorGambone, Justin J.
dc.creatorCilino, Paul
dc.creatorDas, Suman
dc.date.accessioned2021-10-06T21:38:23Z
dc.date.available2021-10-06T21:38:23Z
dc.date.issued2012-08-22
dc.description.abstractThis paper focuses on computational modeling of Scanning Laser Epitaxy (SLE), an additive manufacturing technology being developed at Georgia Tech for the creation of equiaxed, directionally-solidified or single-crystal structures in nickel-based superalloys. The thermal modeling of the system, carried out in a commercial CFD software package, simulates a heat source moving over a powder bed and dynamically adjusts the property values for consolidating CMSX-4 alloy powder. For any given position of the beam, the geometrical parameters of and the temperature gradient in the melt pool are used to estimate the resulting solidification microstructure. Detailed study of the flow field also revealed formation of rotational vortices in the melt pool. Microstructural predictions are shown to be in good agreement with experimental metallography. This work is sponsored by the Office of Naval Research through grant N00014-11-1-0670.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/88452
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/15389
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2012 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectScanning Laser Epitaxyen_US
dc.subjectnickel-based superalloysen_US
dc.subjectsingle-crystal structuresen_US
dc.subjectequiaxed, directionally-solidified structuresen_US
dc.subjectCMSX-4 alloyen_US
dc.titleComputational Modeling and Experimental Validation of Microstructural Development in Superalloy CMSx-4 Processed through Scanning Laser Epitaxyen_US
dc.typeConference paperen_US

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2012 International Solid Freeform Fabrication Symposium