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Spectroscopic monitoring of laser blown powder directed energy deposition of Alloy 718
University West, Department of Engineering Science, Division of Production Systems. (PTW)ORCID iD: 0000-0002-2527-1048
University West, Department of Engineering Science, Division of Production Systems. (PTW)ORCID iD: 0000-0001-5734-294X
University West, Department of Engineering Science, Division of Production Systems. (PTW)ORCID iD: 0000-0001-5608-8636
University West, Department of Engineering Science, Division of Production Systems. (PTW)ORCID iD: 0000-0002-6247-5429
2018 (English)In: Procedia Manufacturing, E-ISSN 2351-9789, Vol. 25, p. 418-425Article in journal (Refereed) Published
Abstract [en]

Experimental explorations of a spectrometer system used for in-process monitoring of the laser blown powder directed energy deposition of Alloy 718 is presented. Additive manufacturing of metals using this laser process experiences repeated heating and cooling cycles which will influence the final microstructure and chemical composition at every given point in the built. The spectrometer system disclosed, under certain process conditions, spectral lines that indicate vaporisation of chromium. Post process scanning electron microscope energy dispersive spectroscopy analysis of the deposited beads confirmed a reduction of chromium. Since the chromium concentration in Alloy 718 is correlated to corrosion resistance, this result encourages to further investigations including corrosion tests.

Place, publisher, year, edition, pages
2018. Vol. 25, p. 418-425
National Category
Metallurgy and Metallic Materials Production Engineering, Human Work Science and Ergonomics
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-13303DOI: 10.1016/j.promfg.2018.06.112Scopus ID: 2-s2.0-8506564084OAI: oai:DiVA.org:hv-13303DiVA, id: diva2:1272977
Conference
8th Swedish Production Symposium, SPS 2018, Stockholm, Sweden, 16-18 May, 2018
Note

Del av specialnumret Proceedings of the 8th Swedish Production Symposium (SPS 2018) Redaktörer: M. Onori, L. Wang, X. V. Wang och W. J

Funders: SUMANnext ; DigiAM

Available from: 2018-12-20 Created: 2018-12-20 Last updated: 2019-06-05Bibliographically approved

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Kisielewicz, AgnieszkaSikström, FredrikChristiansson, Anna-KarinAncona, Antonio

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