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Microstructural characterization and comparison of Ti-6Al-4V manufactured with different additive manufacturing processes
Luleå University of Technology, Division of Materials Science, Luleå 971 81, Sweden.
Luleå University of Technology, Division of Materials Science, Luleå 971 81, Sweden.
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för svetsteknologi (SV). (PTW)ORCID-id: 0000-0002-7675-7152
Luleå University of Technology, Division of Materials Science, Luleå 971 81, Sweden.
2018 (engelsk)Inngår i: Materials Characterization, ISSN 1044-5803, E-ISSN 1873-4189, Vol. 143, s. 68-75Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2018. Vol. 143, s. 68-75
Emneord [en]
Additive manufacturing, Shaped metal deposition, Selective laser melting, Electron beam melting, Laser metal wire/powder deposition, Ti-6Al-4V
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-12078DOI: 10.1016/j.matchar.2018.02.003ISI: 000448099000009Scopus ID: 2-s2.0-85042273976OAI: oai:DiVA.org:hv-12078DiVA, id: diva2:1184655
Forskningsfinansiär
Luleå University of Technology
Merknad

Available online 10 February 2018

Funders: Nationellt rymdtekniskt forskningsprogram (NRFP) ;  EU, Space for innovation and growth (RIT).

Tilgjengelig fra: 2018-02-22 Laget: 2018-02-22 Sist oppdatert: 2019-01-25bibliografisk kontrollert

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