Incorporation of Automated Ball Indentation Methodology for Studying Powder Bed Fabricated 304L Stainless Steel

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dc.creatorKarnati, Sreekar
dc.creatorHoerchler, Jack
dc.creatorFlood, Aaron
dc.creatorLiou, Frank
dc.date.accessioned2021-11-11T15:02:44Z
dc.date.available2021-11-11T15:02:44Z
dc.date.issued2018
dc.description.abstractAutomated Ball Indentation (ABI) is a viable method for estimating the ductility, yield stress, and ultimate stress, among other metrics, in different metallic materials. Currently, ABI data analysis utilizes Holloman’s Power Law to model the plastic region of the true stress-true strain curve. While this formulation is accurate for some materials, its relevance for additively manufactured austenitic stainless steels, such as 304L, needed investigation. The deviation of the material’s plastic behavior from the Power Law was investigated. In order to better model this behavior, both the Voce and Ludwigson formulation were investigated. These formulations were tested for both wrought and additively manufactured 304L stainless steel. Regression analysis was used to choose the appropriate fit. The chosen formulation was then used to generate a material model to simulate the ABI process. These simulations were validated through experimental analysis.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/90211
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/17132
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2018 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectautomated ball indentationen_US
dc.subjectplastic behavioren_US
dc.subjectPower Lawen_US
dc.subject304Len_US
dc.subjectstainless steelen_US
dc.subjectpowder bed fabricationen_US
dc.titleIncorporation of Automated Ball Indentation Methodology for Studying Powder Bed Fabricated 304L Stainless Steelen_US
dc.typeConference paperen_US

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2018 International Solid Freeform Fabrication Symposium