Investigations of γ′, γ″ and δ precipitates in heat-treated Inconel 718 alloy fabricated by selective laser melting

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dc.contributor.author Cao, G. H.
dc.contributor.author Sun, T.
dc.contributor.author Wang, C.
dc.contributor.author Russell, Alan
dc.contributor.author Li, Xing
dc.contributor.author Liu, M.
dc.contributor.author Zhang, Z.
dc.contributor.author Hu, P. F.
dc.contributor.author Russell, Alan
dc.contributor.author Schneider, R.
dc.contributor.author Gerthsen, D.
dc.contributor.author Zhou, Z. J.
dc.contributor.author Li, C. P.
dc.contributor.author Chen, G. F.
dc.contributor.department Ames Laboratory
dc.contributor.department Materials Science and Engineering
dc.date 2018-10-09T22:01:34.000
dc.date.accessioned 2020-06-30T06:08:13Z
dc.date.available 2020-06-30T06:08:13Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 2018
dc.date.embargo 2020-01-05
dc.date.issued 2018-02-01
dc.description.abstract <p>Inconel 718 alloy samples were fabricated by selective laser melting (SLM). Microstructure and precipitation in solution-heat-treated- and double-aging-SLM-made Inconel 718 were studied by scanning and transmission electron microscopy. Electron microscope observations showed that disc-shaped and cuboidal γ″, and circular γ′ precipitates with an average size of 10–50 nm developed within cellular γ austenite matrix. The simulated, experimentally observed electron diffraction patterns, and dark-field imaging further revealed that the precipitation of three variants of γ″ in the γ matrix occurred. The coarser acicular γ″, and globular as well as plate-like δ phases precipitated at grain boundaries and also within the interior of austenite matrix. The morphology, distribution and crystallography of these precipitates and their formation mechanisms were analyzed and discussed.</p>
dc.description.comments <p>This is a manuscript of an article published as Cao, G. H., T. Y. Sun, C. H. Wang, Xing Li, M. Liu, Z. X. Zhang, P. F. Hu, A. M. Russell, R. Schneider, D. Gerthsen, Z. J. Zhou, C. P. Li, and G. F. Chen. "Investigations of γ′, γ ″and δ precipitates in heat-treated Inconel 718 alloy fabricated by selective laser melting." <em>Materials Characterization</em> 136 (2018): 398-406. DOI: <a href="https://dx.doi.org/10.1016/j.matchar.2018.01.006" target="_blank">10.1016/j.matchar.2018.01.006</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/mse_pubs/313/
dc.identifier.articleid 1315
dc.identifier.contextkey 13021081
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath mse_pubs/313
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/55655
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/mse_pubs/313/2018_Russell_InvestigationsGamma.pdf|||Fri Jan 14 23:31:52 UTC 2022
dc.source.uri 10.1016/j.matchar.2018.01.006
dc.subject.disciplines Materials Science and Engineering
dc.subject.disciplines Metallurgy
dc.subject.keywords Nickel alloys
dc.subject.keywords Selective laser melting
dc.subject.keywords Inconel 718
dc.subject.keywords Microstructure
dc.subject.keywords Transmission electron microscopy (TEM)
dc.title Investigations of γ′, γ″ and δ precipitates in heat-treated Inconel 718 alloy fabricated by selective laser melting
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication fb7c222e-fdb7-4931-9aa4-4bc43bea8231
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
relation.isOrgUnitOfPublication bf9f7e3e-25bd-44d3-b49c-ed98372dee5e
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