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Hot corrosion behaviour of wire-arc additive manufactured Ni-based superalloy ATI 718Plus®
University of Manitoba, Department of Mechanical Engineering, Winnipeg, Canada.
University West, Department of Engineering Science, Division of Welding Technology. (PTW, PRIMUS)ORCID iD: 0000-0001-9065-0741
University of Manitoba, Department of Mechanical Engineering, Winnipeg, Canada.
2019 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 158, article id 108086Article in journal (Refereed) Published
Abstract [en]

The hot corrosion behaviour of wire-arc additive manufactured and wrought ATI 718Plus® are studied. ATI 718Plus® produced by the additive manufacturing process, in the as-processed condition, exhibits a significantly lower hot corrosion resistance in comparison to the wrought alloy. Analytical electron microscopy and spectroscopy techniques, with corroboration by thermodynamic calculations, are used to identify the underlying cause of the poor hot corrosion resistance. Based on the understanding accrued from the analyses, post-processing heat treatments are used to improve the hot corrosion resistance, which is valuably pertinent to the application of ATI 718Plus® produced by additive manufacturing in hot corrosive environments. © 2019 Elsevier Ltd

Place, publisher, year, edition, pages
2019. Vol. 158, article id 108086
Keywords [en]
3D printers; Additives; Corrosion resistance; Corrosion resistant alloys; Corrosive effects; Electron microscopes; Electron microscopy; Heat resistance; Nickel alloys; Superalloys; Transmission electron microscopy, ATI 718Plus; Hot corrosion; Metal additives; Ni-based superalloys; WAAM, High temperature corrosion
National Category
Manufacturing, Surface and Joining Technology Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hv:diva-14476DOI: 10.1016/j.corsci.2019.07.010ISI: 000483638900016Scopus ID: 2-s2.0-85068854753OAI: oai:DiVA.org:hv-14476DiVA, id: diva2:1356380
Note

Funders: Natural Sciences and Engineering Research Council of Canada (NSERC)

Available from: 2019-10-01 Created: 2019-10-01 Last updated: 2019-10-15

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Andersson, Joel

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