20.500.12556/RUL-94952 Vplivi toplotne obdelave in parametrov preoblikovanja aluminijevih zlitin za gnetenje Influences on heat treatment and forming parameters of wrought aluminum alloys Zaključna naloga obravnava vpliv različnih tehnoloških parametrov na preoblikovalne lastnosti aluminijevih zlitin. Glavni poudarek je na ugotavljanju vpliva temperature in hitrosti preoblikovanja. S tlačnim preizkusom pri sobni temperaturi smo raziskovali preoblikovalno sposobnost zlitine AW 6082. Preizkus je bil izveden pri več različnih hitrostih deformacije in pri časih naravnega staranja od 1 do 10000 minut. Ugotovili smo, da spreminjanje hitrosti deformacije nima opaznega vpliva na velikost in potek napetosti tečenja. Rezultati preizkusa s toplotno obdelanimi vzorci so pokazali, da se mehanske lastnosti zlitine s časom staranja izboljšujejo. Napetost tečenja pa tudi po daljšem času ni dosegla tako visoke vrednosti, kot so jo imeli vzorci pred toplotno obdelavo. The influence of forming temperature and strain rate on forming characteristics of aluminum alloys was investigated. Upsetting tests of AW 6082 alloy were carried out at room temperature. First group of samples of as delivered material was tested at different strain rates. Samples in the second group were tested at different natural aging time from 1 to 10000 minutes. The results showed that shape of true stress-true strain curves and values of flow stress didn't change noticeably at different strain rates. In case of naturally aged samples, mechanical properties improved during aging process. However, naturally aged samples reached lower flow stress values than samples without heat treatment, even after long aging time. aluminijeve zlitine za gnetenje temperatura preoblikovanja hitrost deformacije krivulja tečenja naravno staranje wrought aluminum alloys forming temperature strain rate flow curve natural aging true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2017-09-11 13:34:51 2017-09-11 13:34:52 2023-11-10 12:49:05 0000-00-00 00:00:00 2017 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 200067 665.pdf 665.pdf 1 A6E13ACC00ECE3CEA748A8D20A0F3F2F f61d995db49672a3127de128b9e00ae45be99b5a268fc3c307ae8308b5826b01 a4ee044f-a1b3-11eb-a523-00155dcfd717 20.500.12556/rul/ac7fa10d-ea49-4331-88f8-42f54eb632aa https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=103441 Fakulteta za strojništvo 0 0 0