Construction of Metallic Glass Structures by Laser-Foil-Printing Technology

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dc.creatorShen, Yiju
dc.creatorLi, Yingqi
dc.creatorTsai, Hai-Lung
dc.date.accessioned2021-11-02T19:42:52Z
dc.date.available2021-11-02T19:42:52Z
dc.date.issued2017
dc.description.abstractMetallic glasses (MGs) have superior mechanical properties such as high tensile strength, hardness, and corrosion resistance, as compared to crystalline metals. Although newly developed MGs have significantly reduced critical cooling rates down to 10 K/s, products of MGs are still limited to simple geometries such as foils/plates or rods with thin section-thickness which is mainly caused by the decrease of thermal conductivities of the new MGs. Recently, we developed a new Laser-foil-printing (LFP) additive manufacturing technology which welds foils, layer by layer, to construct desired 3D structures. With the LFP and Zr-based amorphous foils, 3D, large amorphous structures with complex geometry have been successfully manufactured. To better understand the evolution of crystalline phase, we integrate the finite element based heat transfer model and classic nucleation theory (CNT) based crystal nucleation/growth model. The model was used to demonstrate the evolution of crystal phase as a function of time during laser welding at different locations including the fusion zone (FZ) and heat-affected zone (HAZ). The model is also compared favorably with the experiment results. The reported susceptibility to crystallization in HAZ were discussed and explained.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/89878
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2017 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectmetallic glassen_US
dc.subjectlaser-foil-printingen_US
dc.subjectamorphous foilsen_US
dc.subjectfoilsen_US
dc.subjectadditive manufacturingen_US
dc.titleConstruction of Metallic Glass Structures by Laser-Foil-Printing Technologyen_US
dc.typeConference paperen_US

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2017 International Solid Freeform Fabrication Symposium