Thermal stability of electron beam welded AlCoCrFeNi2.1 alloy

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dc.contributor.authorRončák, Jáncs
dc.contributor.authorJozefovič, Patrikcs
dc.contributor.authorMüller, Petercs
dc.contributor.authorAdam, Ondřejcs
dc.contributor.authorJudas, Jakubcs
dc.contributor.authorDupák, Liborcs
dc.contributor.authorZavdoveev, Anatoliycs
dc.contributor.authorJan, Vítcs
dc.contributor.authorZobač, Martincs
dc.coverage.issue9cs
dc.coverage.volume11cs
dc.date.accessioned2024-12-10T13:55:24Z
dc.date.available2024-12-10T13:55:24Z
dc.date.issued2024-09-30cs
dc.description.abstractAlCoCrFeNi2.1 alloy, which belongs to the group of eutectic high-entropy alloys (EHEAs), possesses a combination of increased strength and ductility. It should retain these properties over a wide temperature range due to the high entropy effect of the system. At the same time, eutectic alloys are generally considered to have good castability, which increases the possibility of casting the alloy in larger volumes. One of the processes, that the alloy does not avoid when applied in industry, are the various joining techniques including electron beam welding. The weld area is often in a non-equilibrium state, which increases the risk of failure during operation. The paper therefore discusses the stability of the microstructure and mechanical properties of AlCoCrFeNi2.1 alloy when exposed to short-term elevated temperatures. The material heated at 900 degrees C for 1 h in a vacuum furnace was observed using light and electron microscopy, analyzed for chemical and phase composition and finally subjected to HV0.1 hardness measurement and tensile strength test. The resulting condition was compared with the welded joint before exposure to elevated temperature. The microstructure of the weld was formed by a fine lamellar eutectic over the entire observed area. EBSD analysis confirmed the presence of a combination of FCC and BCC phases. The material hardness reached an average value of 370 HV0.1. Maximum tensile strength of the weld joint was measured at 944 MPa with the corresponding displacement of the crosshead 6.1 mm. The welded joint demonstrated sufficient stability and the ability to withstand short-term severe elevated temperature conditions.en
dc.formattextcs
dc.format.extent1-12cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials Research Express. 2024, vol. 11, issue 9, p. 1-12.en
dc.identifier.doi10.1088/2053-1591/ad7ccccs
dc.identifier.issn2053-1591cs
dc.identifier.orcid0000-0001-9301-4695cs
dc.identifier.orcid0000-0002-0784-9213cs
dc.identifier.orcid0009-0003-0759-7313cs
dc.identifier.orcid0000-0002-0433-0424cs
dc.identifier.other193407cs
dc.identifier.researcheridLFT-8272-2024cs
dc.identifier.researcheridE-3554-2012cs
dc.identifier.scopus57446325900cs
dc.identifier.scopus7003427290cs
dc.identifier.urihttps://hdl.handle.net/11012/249741
dc.language.isoencs
dc.publisherIOP Publishingcs
dc.relation.ispartofMaterials Research Expresscs
dc.relation.urihttps://iopscience.iop.org/article/10.1088/2053-1591/ad7ccccs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2053-1591/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectAlCoCrFeNi2.1en
dc.subjectelectron beam weldingen
dc.subjecteutectic high-entropy alloysen
dc.subjectthermal stabilityen
dc.titleThermal stability of electron beam welded AlCoCrFeNi2.1 alloyen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-193407en
sync.item.dbtypeVAVen
sync.item.insts2024.12.10 14:55:24en
sync.item.modts2024.12.04 10:31:59en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav materiálových věd a inženýrstvícs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav strojírenské technologiecs
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav automatizace a měřicí technikycs
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