16 KB683 KB13 KB200020262013Beňo, JaroslavCagala, MichalLichý, Petrštevilka:4letnik:47str. 503-506COBISSID:1005226ISSN:1580-2949URN:URN:NBN:SI:doc-MND8KX2HenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijecastingsmagnesium alloysmagnezijeve zlitinemicrostructuremikrostrukturatermomehanske lastnostithermomechanical propertiesulitkiInvestigation of the thermomechanical properties and microstructure of special magnesium alloys| Preiskava termomehanskih lastnosti in mikrostrukture posebnih magnezijevih zlitin|Thanks to their high specific strength together with a low density, magnesium-based alloys have an extensive potential for the use of their castings in automotive industry. The castings based on these materials show relatively good mechanical properties that decrease significantly with an increasing temperature of their thermal exposure. The aim of this work is to study the properties of two alloys commonly used (Mg-Al-Zn, Mn type). From the studied materials the test castings were made and these were formed into the test bars used for a tensile test. This test was carried out within the temperature range of 20-300 °C. Further on, the tests of the thermomechanical properties were complemented with a microstructure analysis with the aim of checking metallurgical interventions (the effect of inoculation)Zaradi velike specifične trdnosti in majhne gostote imajo magnezijeve zlitine velik potencial za uporabo v obliki ulitkov v avtomobilski industriji. Ulitki iz teh materialov kažejo relativno dobre mehanske lastnosti, ki pa se močno zmanjšajo, če so izpostavljeni povišanim temperaturam. Namen tega dela je študij teh lastnosti pri dveh pogosto uporabljanih vrstah zlitine (Mg-Al-Zn, Mn). Iz preiskovanih materialov so bili izdelani preizkusni ulitki, iz katerih so bile pripravljene palice za natezne preizkuse. Ti so se izvajali v temperaturnem območju 20-300 °C. Ugotovitve termomehanskih lastnosti so bile dopolnjene z analizo mikrostrukture, namenjene za preverjanje metalurških ukrepov (učinek inokulacije)TEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije