The Effect of Heat Treatment on the Structure And High - Temperature Strength of Fe3Al - Based Iron Aluminide Doped by Carbona nd Carbide-forming Element

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dc.contributor.authorVodičková Věracs
dc.contributor.authorHanus Pavelcs
dc.contributor.authorKeller Vojtěchcs
dc.contributor.authorŠvec Martincs
dc.date.accessioned2020-06-08T09:52:08Z
dc.date.available2020en
dc.date.available2020-06-08T09:52:08Z
dc.date.issued2020cs
dc.date.updated07-56-2020en
dc.description.abstractA structural study as well as the determination of σ0.2 compression yield stress at high temperatures have been performed on the Fe3Al-based iron aluminide doped by Nb (5 at. %) and C (1.5 at. %). The carbon occurrence leads to the formation of three-phase structure. Fe3Al matrix, niobium carbides and (Fe, Al)2Nb Laves phase were observed in the structure of investigated alloys. Precipitates were inhomogeneously distributed in as cast state alloy. The annealing at 1000 °C for 50 hrs. leads to more homogenously distribution of secondary phase particles and also to refinement of grain size. The strengthening mechanism of material at high temperatures was detected as a combination of strengthening by incoherent precipitates (NbC and Laves phase) and a solid solution hardening by Nb atoms. Effect of two reinforcing mechanisms together with homogeneously precipitate's distribution increase the values of σ0.2 compression yield stress about 50 MPa in whole measured temperature range (600 – 800 °C) in comparison to similar intermetallic's system Fe-Al-Zr-C. Phase composition of the alloy was studied by means of scanning electron microscopy (SEM) equipped by energy dispersive X-ray spectrometer (EDX). The electron backscattered diffraction (EBSD) was used for phase verification and grain size visualization.
dc.format.extent8cs
dc.identifier.doi10.1088/1757-899X/723/1/012030
dc.identifier.issn1757-8981cs
dc.identifier.urihttps://dspace.tul.cz/handle/15240/156858
dc.identifier.urihttps://iopscience.iop.org/article/10.1088/1757-899X/723/1/012030/pdf
dc.language.isoengcs
dc.publisherInstitute of Physics Publishingcs
dc.publisher.cityBristolcs
dc.relation.ispartofIOP Conference Series: Materials Science and Engineeringen
dc.relation.ispartofseries0cs
dc.relation.urihttps://iopscience.iop.org/article/10.1088/1757-899X/723/1/012030/pdfcs
dc.subjectiron aluminidecs
dc.subjectheat treatmentcs
dc.titleThe Effect of Heat Treatment on the Structure And High - Temperature Strength of Fe3Al - Based Iron Aluminide Doped by Carbona nd Carbide-forming Elementcs
local.citation.epage&quotart. no. 012030&quotcs
local.citation.spage&quotart. no. 012030&quotcs
local.event.locationPlzeňen
local.identifier.publikace7695
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