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Microstructural characterization and comparison of Ti-6Al-4V manufactured with different additive manufacturing processes
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-3772-4371
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-5921-1935
Division of Welding Technology, University West, Trollhättan 461 32, Sweden.ORCID iD: 0000-0002-7675-7152
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-3661-9262
2018 (English)In: Materials Characterization, ISSN 1044-5803, E-ISSN 1873-4189, Vol. 143, no SI, p. 68-75Article in journal (Refereed) Published
Abstract [en]

In this work, the microstructures of Ti-6Al-4V manufactured by different additive manufacturing (AM) processes have been characterized and compared. The microstructural features that were characterized are the α lath thickness, grain boundary α (GB-α) thickness, prior β grain size and α colony size. In addition, the microhardnesses were also measured and compared. The microstructure of shaped metal deposited (SMD) Ti-6Al-4V material showed the smallest variations in α lath size, whereas the material manufactured with laser metal wire deposition-0 (LMwD-0) showed the largest variation. The prior β grain size was found to be smaller in material manufactured with powder bed fusion (PBF) as compared with corresponding material manufactured with the directed energy deposition (DED) processes. Parallel bands were only observed in materials manufactured with DED processes while being non-present in material manufactured with PBF processes.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 143, no SI, p. 68-75
Keywords [en]
Additive manufacturing; Shaped metal deposition; Selective laser melting; Electron beam melting; Laser metal wire/powder deposition; Ti-6Al-4V
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-67610DOI: 10.1016/j.matchar.2018.02.003ISI: 000448099000009Scopus ID: 2-s2.0-85042273976OAI: oai:DiVA.org:ltu-67610DiVA, id: diva2:1182062
Note

Validerad;2018;Nivå 2;2018-11-15 (inah)

Available from: 2018-02-12 Created: 2018-02-12 Last updated: 2018-11-16Bibliographically approved

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Neikter, MagnusÅkerfeldt, PiaPederson, RobertAntti, Marta-Lena
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