20.500.12556/DKUM-18725 PREISKAVA TVO JEKLA P91 ZA DELO NA POVIŠANIH TEMPERATURAH PO TOPLOTNI OBDELAVI INVESTIGATION OF HAZ ON THE STEEL FOR ELEVATED TEMPERATURE IN THE HEAT TREATED CONDITION Namen diplomske naloge je bilo preiskati toplotno vplivano območje (TVO), ki nastane pri varjenju jekla P91. Preiskava je usmerjena predvsem na kakovost TVO po toplotni obdelavi. Delo je najprej potekalo na simulatorju termičnega cikla, kjer smo pripravili različne mikrostrukture TVO. Mikrostrukture smo analizirali na optičnem in elektronskem mikroskopu, kjer je bila najbolj pomembna porazdelitev karbidov. Mehanske lastnosti smo ocenjevali s pomočjo trdote in žilavosti. The aim of diploma work was to investigate the heat affected zone (HAZ) that arises by steel P91 welding. The investigation was directed main by to the HAZ quality after the heat treatment. The work was conducted on a thermal cycle simulator. Different HAZ microstructures ware prepared. Those microstructures ware analyzed using light and electron microscope. Carbides distribution was the most important. Mechanical properties were assessed measuring hardness and Charpy toughness. jeklo zvarni spoj TVO simulator termičnega cikla žarjenje trdota udarna žilavost mikrostruktura toplotna obdelava steel welded joint HAZ simulator thermal cycle annealing hardness impact toughness microstructure heat treatment true true false [A. Zevnik] Slovenski jezik Angleški jezik Diplomsko delo 2011-05-28 14:55:34 2011-05-31 14:29:33 2022-04-13 10:59:23 2023-12-24 03:19:28 2011 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791:620.178.2(043.2)_ 15131158 URN:SI:UM:DK:Y0L5DGA1 VS_Zevnik_Ales_2011.pdf VS_Zevnik_Ales_2011.pdf 1 DBC43061F630F38D4D8D92C5BAD3AAF6 bee1c17acb3c6a2131e661c7ddd2bf2a3fdb591fdd0b08dd212032097ffbc2c8 34ef506a-7c05-11eb-bb7a-00155d0001ca 20.500.12556/dkum/fd307255-934b-4636-a6c1-d11010cb0014 https://dk.um.si/Dokument.php?lang=slv&id=22410 Fakulteta za strojništvo 0 0 0