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Microstructure characterisation of Ti-6Al-4V from different additive manufacturing processes
Luleå University of Technology, Division of Materials Science, Luleå.
Luleå University of Technology, Division of Materials Science, Luleå.
University West, Department of Engineering Science, Division of Welding Technology.
Luleå University of Technology, Division of Materials Science, Luleå.
2017 (English)In: IOP Conference Series: Materials Science and Engineering, IOP Science , 2017, Vol. 258, 012007Conference paper, Published paper (Refereed)
Abstract [en]

The focus of this work has been microstructure characterisation of Ti-6Al-4V manufactured by five different additive manufacturing (AM) processes. The microstructure features being characterised are the prior β size, grain boundary α and α lath thickness. It was found that material manufactured with powder bed fusion processes has smaller prior β grains than the material from directed energy deposition processes. The AM processes with fast cooling rate render in thinner α laths and also thinner, and in some cases discontinuous, grain boundary α. Furthermore, it has been observed that material manufactured with the directed energy deposition processes has parallel bands, except for one condition when the parameters were changed, while the powder bed fusion processes do not have any parallel bands.

Place, publisher, year, edition, pages
IOP Science , 2017. Vol. 258, 012007
Series
IOP Conference Series, E-ISSN 1757-899X
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-11797DOI: 10.1088/1757-899X/258/1/012007Scopus ID: 2-s2.0-85035102621OAI: oai:DiVA.org:hv-11797DiVA: diva2:1159665
Conference
International Materials Research Meeting in the Greater Region: "Current Trends in the Characterisation of Materials and Surface Modification"6–7 April 2017, Saarland University, Saarbrücken, Germany
Available from: 2017-11-23 Created: 2017-11-23 Last updated: 2017-12-11Bibliographically approved

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Pederson, Robert

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