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Twin-Wire Arc Additive Manufacturing and Solution Treatment for NiTiNb Alloy

2026-03-13Documento de conferência Acesso aberto
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dc.contributor.authorChen, Long
dc.contributor.authorZhao, Miao
dc.contributor.authorShen, Jiajia
dc.contributor.authorTeshome, Fissha Biruke
dc.contributor.authorPang, Bowen
dc.contributor.authorWu, Yiming
dc.contributor.authorZhou, Naixun
dc.contributor.authorZeng, Zhi
dc.contributor.institutionCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
dc.contributor.institutionDCM - Departamento de Ciência dos Materiais
dc.date.accessioned2026-06-26T13:57:01Z
dc.date.available2026-06-26T13:57:01Z
dc.date.issued2026-03-13
dc.descriptionPublisher Copyright: © 2026 The Authors.
dc.description.abstractNiTiNb shape memory alloys (SMAs) are attractive for applications that demand a wide transformation hysteresis. In this study, NiTiNb thin walls were fabricated using twin-wire arc additive manufacturing (T-WAAM) via in-situ co-feeding of NiTi and Nb wires, and the effect of subsequent solution treatment on phase transformation, microstructure, phase constitution, and mechanical property was systematically investigated. Both the as-deposited (AD) and solution-treated (HT) NiTiNb exhibit a significantly wider transformation hysteresis compared with NiTi wire. Solution treatment sharpens the transformation peaks, shifts the transformation to higher temperatures, and preserves the wide hysteresis. The AD state is characterized by directional dendritic structures and a continuous Nb-rich inter-dendritic network with a pronounced build-aligned texture. After solution treatment, this network decomposes into discrete Nb-rich particles, accompanied by improved chemical homogeneity, and texture weakening, without noticeable grain coarsening. Phase analysis indicates slightly intensified TiNb and minor Ti2Ni formation, consistent with Nb partitioning from a supersaturated matrix. Mechanically, the AD state demonstrates slightly higher fracture strength but fails prematurely with reduced fracture strain, whereas the HT state shows modestly lower strength but enhanced ductility, consistent with fractographic observations. Overall, the combination of T-WAAM with an optimized solution treatment schedule effectively mitigates additive manufacturing-induced heterogeneity while maintaining the Nb-induced wide hysteresis, thereby providing a practical process rout for NiTiNb components with stable functional and mechanical performance.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent8
dc.format.extent1329532
dc.identifier.doi10.3233/ATDE260274
dc.identifier.isbn9781643686561
dc.identifier.issn2352-751X
dc.identifier.otherPURE: 162793186
dc.identifier.otherPURE UUID: 7b019450-2f1d-4e2d-b91b-95200d32a494
dc.identifier.otherScopus: 105035211065
dc.identifier.urihttp://hdl.handle.net/10362/204120
dc.identifier.urlhttps://www.scopus.com/pages/publications/105035211065
dc.language.isoeng
dc.peerreviewedyes
dc.publisherIOS Press BV
dc.subjectMicrostructure
dc.subjectNiTiNb
dc.subjectPhase transformation
dc.subjectSolution treatment
dc.subjectTwin-wire arc additive manufacturing
dc.subjectSoftware
dc.subjectAlgebra and Number Theory
dc.subjectComputer Science Applications
dc.subjectStrategy and Management
dc.subjectIndustrial and Manufacturing Engineering
dc.titleTwin-Wire Arc Additive Manufacturing and Solution Treatment for NiTiNb Alloyen
dc.title.subtitlePhase Transformation, Microstructure, and Mechanical Propertyen
dc.typeconference object
degois.publication.firstPage639
degois.publication.lastPage646
degois.publication.titleProceedings of the 2nd International Conference (ICIMCC 2025), Wuhan, China, 12-14 December 2025
degois.publication.title2nd Annual International Conference on Intelligent Manufacturing and Cloud Computing, ICIMCC 2025
dspace.entity.typePublication
rcaap.rightsopenAccess

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