Intermetallic phases in 3D printed INCONEL 718

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dc.contributor.authorJandová, Dagmar
dc.contributor.editorKučerová, Ludmila
dc.contributor.editorJirková, Hana
dc.contributor.editorJeníček, Štěpán
dc.date.accessioned2019-10-08T12:47:08Z
dc.date.available2019-10-08T12:47:08Z
dc.date.issued2019
dc.description.abstract-translatedMicrostructure of 3D printed INCONEL alloy consists of elongated austenitic grains with high density of precipitates. Three types of intermetallic phases, all with the Ni3X stoichiometry, were identified using transmission electron microscopy and energy dispersive X-ray microanalysis. Fine equiaxed gamma’ and disc-shape gamma’’ particles were spread within grains, while coarse plate-like delta phase pined grain boundaries. The metastable gamma’, gamma’’ phases and equilibrium delta phase can be represented as Ni3(Al,Ti) with the L12, Ni3(Nb,Al,Ti) with the DO22 and Ni3Nb with DOa unit cell respectively. The coherent gamma’ and gamma’’ phases nucleate independently of one another; Al and Ti atoms in solid solution promote gamma’ precipitation, while Nb increases density of gamma’’ phase. The incoherent delta phase forms at grain boundaries as a transformation product of gamma’’ during 3D printing process and/or subsequent heat treatment. The both gamma’ and gamma’’ phases contribute to precipitation strengthening of the alloy. Delta phase stabilizes grain size and improve strength, however its uncontrolled growth can deteriorate stress rupture properties.en
dc.description.sponsorshipPING 2019 is organized with the support of funds for specific university research project SVK1-2019-002.en
dc.format1 s.cs
dc.format.mimetypeapplication/PDF
dc.identifier.citationJIRKOVÁ, Hana ed.; JENÍČEK, Štepán ed. Proceedings PING 2019: modern trends in material engineering: 10.-13.09.2019, Pilsen. 1. vyd. Plzeň: University of West Bohemia, 2019, s. 82. ISBN 978-80-261-0879-5.en
dc.identifier.isbn978-80-261-0879-5
dc.identifier.urihttp://hdl.handle.net/11025/35255
dc.language.isoenen
dc.publisherUniversity of West Bohemiaen
dc.rights© University of West Bohemiaen
dc.rights.accessopenAccessen
dc.subjectInconel 718cs
dc.subjectintermetalická fázecs
dc.subjectsrážkycs
dc.subjectTEMcs
dc.subject.translatedInconel 718en
dc.subject.translatedintermetallic phaseen
dc.subject.translatedprecipitationen
dc.subject.translatedTEMen
dc.titleIntermetallic phases in 3D printed INCONEL 718en
dc.typekonferenční příspěvekcs
dc.typeconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen

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