20.500.12556/DKUM-40850 ANALIZA KRHKIH IN ŽILAVIH PRELOMOV HETEROGENIH ENERGETSKIH KOMPONENT ANALYSIS OF BRITTLE AND DUCTILE FRACTURES OF HETEROGENEOUS ENERGY COMPONENTS Prelomi heterogenih energetskih komponent največkrat vodijo do nenadnih porušitev energetskih konstrukcij (tlačne posode, cevovodi, mostovi, itd..), ki ogrožajo varnost ljudi, okolja in povzročajo veliko ekonomsko škodo. Zaradi navedenega je nujna natančna in sistematična analiza jeklenih prelomnih površin in pripadajočih heterogenih energetskih komponent tako imenovanih zvarnih spojev. V nalogi so izvedene metalografske in fraktografske raziskave prelomnih površin z optičnim in elektronskim mikroskopom z namenom analize iniciacijskih krhkih in žilavih prelomov, odklonov smeri razpoke in mikrostrukture na konici razpoke. Fractures of heterogeneous energy components often lead to sudden failures of energy constructions (pressure vessels, pipelines, bridges, etc..) which jeopardize people and environment safety and cause a huge economy damage. Thus, an exact and systematics analysis of steel fracture surfaces and its heterogeneous energy components, so called welded joints, is necessary. In this thesis, metallographical and fractographical investigations of fracture surfaces were performed by using optical and scanning electron microscope with the purpose to analyse initial fracture surface appearance (brittle or ductile), fracture path, as well as microstructure at the crack tip. energetska komponenta zvarni spoji krhki in žilavi lom konica razpoke energy component welded joint brittle and ductile fracture crack tip true true false [M. Mlakar] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2013-06-21 18:36:39 2013-08-08 15:01:25 2022-05-03 03:06:31 2021-04-24 03:20:29 2013 0 Krško 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791/.792:620.1(043.2) 1024142172 URN:SI:UM:DK:OLFSDR2S VS_Mlakar_Marko_2013.pdf VS_Mlakar_Marko_2013.pdf 1 E18D7FD44E84B69B1408FB68B10D9C40 0bd2189cb0a29b55b980f168fb1c79b2ac7e083d753bc936a84ecaee4023ebc8 1b6c8a0e-7c0a-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=56697 Fakulteta za energetiko 0 0 0