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Electron beam powder bed fusion of Ti-30Ta high-temperature shape memory alloy: microstructure and phase transformation behaviour

dc.date.accessioned2024-07-09T12:48:32Z
dc.date.available2024-07-09T12:48:32Z
dc.date.issued2024-06-19
dc.identifierdoi:10.17170/kobra-2024070810478
dc.identifier.urihttp://hdl.handle.net/123456789/15904
dc.description.sponsorshipGefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem Verlagger
dc.description.sponsorshipThis work was supported by Alexander von Humboldt-Stiftung.eng
dc.language.isoeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectadditive manufacturingeng
dc.subjectprealloyed powdereng
dc.subjectEIGAeng
dc.subjectrefractory metalseng
dc.subjectmartensitic phase transformationeng
dc.subject.ddc600
dc.subject.ddc660
dc.titleElectron beam powder bed fusion of Ti-30Ta high-temperature shape memory alloy: microstructure and phase transformation behavioureng
dc.typeAufsatz
dcterms.abstractThe present study reports on additive manufacturing of a Ti-30Ta (at.%) high-temperature shape memory alloy (HT-SMA) using electron beam powder bed fusion (PBF-EB/M) technique. Detailed microstructure analysis was conducted to reveal the microstructural evolution along the entire process chain, i.e. from gas-atomised powder to post-processed material. PBF-EB/M processed structures with near full density and an isotropic, β-phase stabilised microstructure, i.e. equiaxed β-grains of around 20 μm in diameter with no preferred crystallographic orientation, are reported. As revealed by differential scanning calorimetry, post-process heat-treated Ti-Ta demonstrates a reversible martensitic phase transformation well above 100°C. Although partly unmolten Ta-particles after both gas atomisation and PBF-EB/M remain a challenge towards robust processing, PBF-EB/M appears to show significant potential for fabrication of Ti-Ta HTSMAs, especially when functional metal parts and components with complex shapes are required, which are difficult to fabricate conventionally.eng
dcterms.accessRightsopen access
dcterms.creatorLauhoff, Christian
dcterms.creatorNobach, Mikkel
dcterms.creatorMedvedev, Alex
dcterms.creatorArold, Tizian
dcterms.creatorTorrent, Christof Johannes Jaime
dcterms.creatorElambasseril, Joe
dcterms.creatorKrooß, Philipp
dcterms.creatorStenzel, Melanie
dcterms.creatorWeinmann, Markus
dcterms.creatorXu, Wei
dcterms.creatorMolotnikov, Andrey
dcterms.creatorNiendorf, Thomas
dc.relation.doidoi:10.1080/17452759.2024.2358107
dc.subject.swdRapid Prototyping <Fertigung>ger
dc.subject.swdMemory-Legierungger
dc.subject.swdMikrostrukturger
dc.subject.swdSelektives Elektronenstrahlschmelzenger
dc.subject.swdHochtemperaturger
dc.subject.swdHochschmelzendes Metallger
dc.subject.swdMartensitumwandlungger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:1745-2767
dcterms.source.issueIssue 1
dcterms.source.journalVirtual and Physical Prototypingeng
dcterms.source.volumeVolume 19
kup.iskupfalse


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