20 KB1285 KB20 KB199219991999Križman, AlojzSpaić, SavoZupanič, Francletnik:33številka:56 stranistr. 309-314ISSN:1318-0010COBISSID:163498URN:URN:NBN:SI:doc-97A7LYKNslInštitut za kovinske materiale in tehnologijeŽelezarna JeseniceŽelezarna RavneŽelezarna ŠtoreKovine zlitine tehnologijealuminijAluminij Mostaraluminumborternarni sistemititanvečfazni sistemizlitineKonstitucija ternarnega sistema Al-Ti-B v aluminijevem kotu| Constitution of the ternary system Al-Ti-B in the aluminium-rich corner|In this work the Al-corner of the ternary system Al-Ti-B was sistematically investigated. Several alloys with cumulative content of titanium and boron with 0,1 , 0,5 and 1 weight percentage Ti+B were prepared. Differential thermal analysis (DTA) of all alloys were carried out to determine the liquidus temperatures and temperatures of uni- and invariant reactions. Microstructure of all alloys was analysed by different techniques of metallographic analysis (light and scanning electron microscopy, EDS and X-ray diffraction) in the as-cast condition and after DTA. By taking into account results of DTA, metallographic analysis and also the already known characteristic of Al-Ti-B alloys we analysed conditions in which uni- and invariant reactions are taking place. We also determined the nature of these reactions and proposed the most probable liquidus projection in the aluminium corner of the system Al-Ti-BV delu je sistematično raziskan aluminijev kot ternarnega sistema Al-Ti-B. Izdeleli smo po pet (5) zlitin s skupno koncentracijo titana in bora 0,1; 0,5 in 1 mas.%. Z diferenčno termično analizo (DTA) smo opredelili temperature likvidus ter temperature eno- in invariantnih reakcij, z različnimi metodami metalografske analize (svetlobna mikroskopija, vrstična elektronska mikroskopija, EDS, rentgenska difrakcija) pa mikrostrukture vseh zlitin v izhodnem stanju in po DTA. Ob upoštevanju rezultatov DTA in metalografske analize ter tudi nekaterih že znanih značilnosti zlitin Al-Ti-B smo analizirali razmere pri poteku eno- in invariantnih reakcij, opredelili njhiovo naravo ter podali najverjetnejšo projekcijo likvidus ploskve v aluminijevem kotu ternarnega sistema Al-Ti-BTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije