{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-GCAC9EVG/6ee30741-5353-495f-986b-f4b722535323/PDF","dcterms:extent":"324 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-GCAC9EVG/5acf010d-57da-43fb-b570-85290a448544/TEXT","dcterms:extent":"14 KB"}],"edm:TimeSpan":{"@rdf:about":"2000-2024","edm:begin":{"@xml:lang":"en","#text":"2000"},"edm:end":{"@xml:lang":"en","#text":"2024"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-GCAC9EVG","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2014","dc:creator":["Yener, Tuba","Zeytin, Sakin"],"dc:format":[{"@xml:lang":"sl","#text":"letnik:48"},{"@xml:lang":"sl","#text":"številka:6"},{"@xml:lang":"sl","#text":"str. 847-850"}],"dc:identifier":["COBISSID:1113770","ISSN:1580-2949","URN:URN:NBN:SI:doc-GCAC9EVG"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"aluminij"},{"@xml:lang":"en","#text":"aluminum"},{"@xml:lang":"en","#text":"electric-current-activated sintering"},{"@xml:lang":"en","#text":"intermetallics"},{"@xml:lang":"sl","#text":"intermetalne zlitine"},{"@xml:lang":"en","#text":"powder metallurgy"},{"@xml:lang":"sl","#text":"prašna metalurgija"},{"@xml:lang":"sl","#text":"sintranje"},{"@xml:lang":"en","#text":"titan"},{"@rdf:resource":"http://www.wikidata.org/entity/Q844613"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Synthesis and characterization of metallic-intermetallic Ti-TiAl3, Nb-Ti-TiAl3 composites produced with electric-current-activated sintering (ECAS)| Sinteza in karakterizacija kompozitov kovina-intermetalna zlitina Ti-TiAl3, Nb-Ti-TiAl3, izdelanih s sintranjem, aktiviranim z električnim tokom (ECAS)|"},"dc:description":[{"@xml:lang":"sl","#text":"In this study, we investigated the fabrication of in-situ metallic-intermetallic Ti-TiAl3 and Nb-Ti-TiAl3 composites from a powder mixture containing w = 40 % titanium and w = 60 % aluminum with (w = 5 % and w = 10 %) and without a metallic-niobium addition. Powder mixtures without a binder were compressed uniaxially under a pressure of 130 MPa and sintered at a current of 2000 A for 20 min in a steel mould using the electric-current-activated sintering method. The microstructures of the sintered samples were investigated with light and scanning electron microscopes, the phases in the samples were analyzed with XRD and their hardness was measured with a Vickers hardness tester. Light and scanning electron microscope (EDS) investigations showed that the microstructures of non-reinforced titanium-aluminum samples consisted of two components: the main component was titanium aluminide and the other one was metallic titanium. Also, there was a trace amount of aluminum oxide in the sintered body. XRD analyses also demonstrated that the main phase in the composite is TiAl3. The XRD analyses of the samples reinforced with w = 5 % and w = 10 % of niobium to enhance the ductility of the body showed that metallic niobium and Ti-TiAl3 remained the main phase. In addition, the average hardness values of the samples of the non-reinforced Ti-TiAl3 composite, w = 5 % Nb-reinforced Ti-TiAl3 composite and w = 10 % Nb-reinforced Ti-TiAl3 composite were measured to be about (759, 669 and 600) HV, respectively"},{"@xml:lang":"sl","#text":"V tej študiji je bila preiskovana in situ izdelava kompozitov kovina-intermetalna zlitina Ti-TiAl3 in Nb-Ti-TiAl3 iz mešanice kovinskih prahov z w = 40 % titana, w = 60 % aluminija z dodatkom kovinskega niobija (w = 5 % in w = 10 %) ali brez njega. Mešanica prahov brez veziva je bila enoosno stisnjena pri tlaku 130 MPa in sintrana pri toku 2000 A 20 min v jekleni formi z uporabo metode sintranja, aktiviranega z električnim tokom. Mikrostruktura sintranih vzorcev je bila preiskovana s svetlobno in vrstično elektronsko mikroskopijo, faze so bile analizirane z XRD, njihova trdota pa je bila izmerjena z merilnikom trdote po Vickersu. Svetlobni in vrstični elektronski mikroskop (EDS) sta pokazala, da je mikrostruktura neojačanega titanovega aluminida sestavljena iz dveh komponent: glavna komponenta je bila titanov aluminid, druga pa kovinski titan. V sintrani osnovi so bili tudi sledovi aluminijevega oksida. XRD-analize so pokazale, da je glavna sestavina kompozita TiAl3. XRD-analiza vzorca, ojačanega z w = 5 % in w = 10 % niobija za povečanje duktilnosti osnove, je pokazala, da sta kovinski niobij in Ti-TiAl3 glavni fazi. Izmerjene trdote vzorcev Ti-TiAl3-kompozita brez ojačitve in z w = 5 % Nb ter w = 10 % Nb utrjenega Ti-TiAl3-kompozita so bile (759, 669 in 600) HV"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:DOC-GCAC9EVG","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-GCAC9EVG"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-GCAC9EVG/6ee30741-5353-495f-986b-f4b722535323/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-GCAC9EVG/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-GCAC9EVG"}}}}