Melt Pool Characterization for Selective Laser Melting of Ti-6Al-4V Pre-alloyed Powder

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dc.creatorGong, Haijun
dc.creatorGu, Hengfeng
dc.creatorZeng, Kai
dc.creatorDilip, J.J.S.
dc.creatorPal, Deepankar
dc.creatorStucker, Brent
dc.date.accessioned2021-10-12T21:42:50Z
dc.date.available2021-10-12T21:42:50Z
dc.date.issued2014
dc.description.abstractParameter optimization for metal powders in Selective Laser Melting (SLM) is usually carried out by experimental investigations of the influence of significant parameters (such as laser power, scan speed, hatch spacing, layer thickness, scan pattern, etc.) on microstructure and/or mechanical properties. This type of experimental optimization is extremely time- and cost-consuming. In order to accelerate the optimization process, a study was undertaken to develop a method for rapid optimization of parameters based on melt pool characterizations. These characterizations began with investigations of SLM single bead experiments. Pre-alloyed Ti-6Al-4V powder was used for single bead fabrication with multiple laser power and scan speed combinations. Surface morphology and dimensions of single beads were characterized. Geometrical features of melt pools were measured after polishing and etching of the cross section of each single bead. It was found that melt pool characteristics provide significant information that is helpful for process parameters selection. These experiments are being extended to characterize test pads with multiple layers.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/88748
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/15682
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2014 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectSelective Laser Meltingen_US
dc.subjectpre-alloyed powderen_US
dc.subjectTi-6Al-4Ven_US
dc.subjectparameter optimizationen_US
dc.subjectsingle bead fabricationen_US
dc.subjectmelten_US
dc.subjectmelt pool geometryen_US
dc.titleMelt Pool Characterization for Selective Laser Melting of Ti-6Al-4V Pre-alloyed Powderen_US
dc.typeConference paperen_US

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2014 International Solid Freeform Fabrication Symposium