{"?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-UWEZRT0K/5e632712-e164-4aa6-a63a-dda0eaead1fa/HTML","dcterms:extent":"25 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-UWEZRT0K/51d064b5-122b-4d86-a5e2-671114deefe4/PDF","dcterms:extent":"434 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-UWEZRT0K/70668d94-00cd-455d-a67d-36861bb1b325/TEXT","dcterms:extent":"20 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-UWEZRT0K","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2012","dc:creator":["Kafexhiu, Fevzi","Vodopivec, Franc","Vojvodič-Tuma, Jelena"],"dc:format":[{"@xml:lang":"sl","#text":"letnik:46"},{"@xml:lang":"sl","#text":"številka:5"},{"@xml:lang":"sl","#text":"str. 459-464"}],"dc:identifier":["ISSN:1580-2949","COBISSID:943018","URN:URN:NBN:SI:doc-UWEZRT0K"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"en","#text":"martensitic steels"},{"@xml:lang":"sl","#text":"martenzitna jekla"},{"@xml:lang":"en","#text":"mechanical properties"},{"@xml:lang":"sl","#text":"mehanske lastnosti"},{"@xml:lang":"en","#text":"microstructure"},{"@xml:lang":"sl","#text":"mikrostruktura"},{"@xml:lang":"sl","#text":"poopuščanje"},{"@xml:lang":"en","#text":"tempering"},{"@rdf:resource":"http://www.wikidata.org/entity/Q2486226"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Effect of tempering on the room-temperature mechanical properties of X20CrMoV121 and P91 steels| Vpliv popuščanja na mehanske lastnosti jekel X20CrMoV121 in P91 pri sobni temperaturi|"},"dc:description":[{"@xml:lang":"sl","#text":"The effect of tempering time and temperature on the room-temperature tensile properties and hardness of two martensitic creep-resistant steels, X20CrMoV121 and P91, was investigated. Samples cut from industrial tubes were tempered for 17520 h at 650 °C and for 8760 h at 750 °C. On the tempered samples the yield stress, tensile strength, and hardness at room temperature were determined and an SEM examination was carried out. It was found that the effect of tempering at 750 °C on the microstructural changes, room-temperature tensile properties and hardness was greater for both steels than the effect of tempering at 650 °C. The changes in the yield stress, tensile strength and hardness of both steels at a given tempering temperature were found to be very similar. Therefore, a general mathematical expression with specific coefficients for each property was deduced. These results are part of a larger investigation aimed at establishing a correlation between the particle spacing, yield stress, creep rate and hardness, which could be useful in an evaluation of the lifetime issues relating to the thermal-power-plant components"},{"@xml:lang":"sl","#text":"Vpliv časa in temperature popuščanja na raztržne lastnosti in trdoto pri sobni temperaturi je bil raziskan pri martenzitnih jeklih X20CrMoV121 in P91, ki sta odporni proti lezenju. Preizkušanci so bili izrezani iz industrijskih cevi in popuščeni do 17520 h pri 650 °C in 8760 h pri 750 °C. Na popuščenih vzorcih so bile določene meje plastičnosti, raztržna trdnost in trdota pri sobni temperaturi, mikrostruktura pa preiskana v SEM. Ugotovljeno je bilo, da je vpliv popuščanja pri 750 °C na spremembo mikrostrukture, raztržne lastnosti pri sobni temperaturi in trdoto večji pri obeh jeklih, kot vpliv popuščanja pri 650 °C. Spremembe meje plastičnosti, trdnosti in trdote so bile podobne pri obeh jeklih pri dani temperaturi popuščanja. Razvita je bila zato matematična odvisnost s specifičnimi koeficienti za vsako lastnost. Rezultati so del širše raziskave, katere cilj je opredeliti korelacije med razdaljo med izločki, mejo plastičnosti, hitrostjo lezenja in trdoto, ki bi bile koristne pri oceni preostale trajnostne dobe komponent termoelektrarn"}],"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-UWEZRT0K","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-UWEZRT0K"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-UWEZRT0K/51d064b5-122b-4d86-a5e2-671114deefe4/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-UWEZRT0K/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-UWEZRT0K"}}}}