{"?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-ELO3GTZS/4d131683-a90c-44d7-85f2-0b31e0dd4fd0/HTML","dcterms:extent":"24 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-ELO3GTZS/99c7dc86-9fd5-4582-a327-974619c0fe63/PDF","dcterms:extent":"451 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-ELO3GTZS/542ade64-a765-4f03-b4f2-70a36f05c6f5/TEXT","dcterms:extent":"19 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-ELO3GTZS","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2007","dc:creator":["Dománková, Mária","Hudáková, Mária","Jurči, Peter","Šuštaršič, Borivoj"],"dc:format":[{"@xml:lang":"sl","#text":"letnik:41"},{"@xml:lang":"sl","#text":"številka:6"},{"@xml:lang":"sl","#text":"str. 283-287"}],"dc:identifier":["ISSN:1580-2949","COBISSID:640426","URN:URN:NBN:SI:doc-ELO3GTZS"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"aluminijeve zlitine"},{"@xml:lang":"en","#text":"aluminium alloy"},{"@xml:lang":"sl","#text":"mikrostruktura"},{"@xml:lang":"sl","#text":"nalivanje"},{"@xml:lang":"sl","#text":"strjevanje"},{"@xml:lang":"sl","#text":"trakovi"},{"@rdf:resource":"http://www.wikidata.org/entity/Q447725"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Microstructural evaluation of rapidly solidified Al-7Cr melt spun ribbons| Ovrednotenje mikrostrukture hitrostrjenih trakov Al-7Cr|"},"dc:description":[{"@xml:lang":"sl","#text":"The use of conventional bulk materials is limited by segregation phenomena, which are generated during the solidification and cannot be eliminated in the solid state. The introduction of rapid-solidification technology (RST) into material processing overcame some of the problem of unacceptable material quality and broadened the range of materials that it is possible to fabricate. The use of conventional ingot metallurgy for the fabrication of aluminium alloys containing a large amount of elements with a low diffusion coefficient is impossible because coarse, hard and brittle intermetallics are formed and the alloys have poor mechanical properties. The use of RST makes it possible to produce these alloys with an improved microstructure; however, before industrial production the structure and properties of the rapidly solidified semi-products as well as the consolidated bulk product must be evaluated systematically. In this paper, melt-spun ribbons, made under various conditions from a binary Al-7%Cr, alloy are investigated. The structure consisted of a supersaturated Al solid solution with a high dislocation density, precipitates of chromium-rich phases and rosette-like spherolites formed from the Al solid solution and the Alsub(7)Cr intermetallic phase. The type of phases is related to the processing conditions in only a very limited way"},{"@xml:lang":"sl","#text":"Praktična uporaba konvencionalnih materialov je omejena zaradi izcejanja zlitinskih elementov. To nastaja zaradi različnih vzrokov in pojavov med strjevanjem in ga je praktično nemogoče odpraviti s kasnejšo toplotno obdelavo v trdnem stanju. Hitro strjevanje in njegova vpeljava kot tehnologije za procesiranje različnih kovinskih materialov premaguje to oviro in razširja izbiro materialov. Uporaba konvencionalne metalurgije ingotov za izdelavo Al zlitin z velikim deležem legirnih elementov z majhnim difuzijskim koeficientom je praktično nemogoča, ker v mikrostrukturi nastajajo grobi delci trdih in krhkih intermetalnih spojin in imajo zlitine nizke mehanske lastnosti. Uporaba tehnologije hitrega strjevanja omogoča izdelavo teh zlitin z izboljšano mikrostrukturo, pred vpeljavo te tehnologije v redno proizvodnjo pa je treba sistematično analizirati strukturo in lastnosti hitrostrjenih polproizvodov ter iz njih izdelanega zgoščenega izdelka. V tem članku obravnavamo raziskave hitro strjenih trakov zlitine Al z masnim deležem Cr 7 %, izdelanih pri različnih pogojih. Preiskave so pokazale, da mikrostrukturo sestavljajo: s Cr prenasičena trdna raztopina Al z veliko gostoto dislokacij ter izločki na Cr bogatih faz, kakor tudi peritektik v obliki rozet nastal iz trdne raztopine Al in intermetalne faze Alspodaj(7)Cr. Ugotovili smo, da je oblika in velikost posameznih faz relativno malo odvisna od izbranih pogojev izdelave hitro strjenih trakov"}],"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-ELO3GTZS","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-ELO3GTZS"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-ELO3GTZS/99c7dc86-9fd5-4582-a327-974619c0fe63/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-ELO3GTZS/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-ELO3GTZS"}}}}