Simulation of the Thermal Behavior and Analysis of Solidification Process During Selective Laser Melting of Alumina

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dc.creatorZhang, Kai
dc.creatorLiu, Tingting
dc.creatorLiao, Wenhe
dc.creatorZhang, Changdong
dc.creatorZheng, Yi
dc.creatorShao, Huang
dc.date.accessioned2021-11-15T20:39:52Z
dc.date.available2021-11-15T20:39:52Z
dc.date.issued2018
dc.description.abstractSelective laser melting (SLM) has rapidly developed in the past decade. High precision-complex ceramics parts can be directly fabricated using this technology. To study the thermal behavior of molten pools in the selective laser melting of alumina （Al2O3）, we established a three-dimensional model based on ANSYS. Then, combined with simulation results, the physical phenomena during the rapid solidification process were discussed. The simulation results showed that the laser power and scanning speed exerts a marked influence on the maximum temperature, liquid lifetime, dimensions, and temperature gradient of the molten pool. Owing to the different temperature gradients in the molten pool, the thermal capillary force on the free surface varies. As a result, a slight difference exists between the stripy solidification structures. Different orientations of columnar crystals can be obtained. The underlying mechanism controls the direction of the temperature gradient with suitable processing routes, such as decreasing the scanning speed.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/90263
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/17184
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.subjectthermal behavioren_US
dc.subjectmolten poolen_US
dc.subjectsolidificationen_US
dc.subjectselective laser meltingen_US
dc.subjectaluminaen_US
dc.titleSimulation of the Thermal Behavior and Analysis of Solidification Process During Selective Laser Melting of Aluminaen_US
dc.typeConference paperen_US

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2018 International Solid Freeform Fabrication Symposium