20.500.12556/RUL-167496 Influence of flux agent composition in A-TIG welding Of Cu-ETP sheets Due to its high coefficient of thermal expansion and high thermal conductivity, TIG welding of copper and copper alloys is considered difficult and demanding. Activated TIG welding (A-TIG) has been widely researched as a welding method for obtaining deeper penetration on various metals. However, A-TIG welding of copper remains unexplored without known influence of flux substances, applied parameters and achieved mechanical properties in produced welds. Three substances were examined as single component fluxes in this work: Calcium oxide (CaO), Silicon dioxide (▫$SiO_2$▫) and Sodium carbonate (▫$Na_2CO_3$▫). Produced welds were characterized by visual inspection and macrostructural analysis, also bend testing and tensile strength testing were performed. Microstructure of the weld with optimal mechanical properties was analyzed by means of Field Emission Gun-Scanning Electron Microscope (FEG-SEM) and also the chemical characterization of the weld was made by means of Energy Dispersive Spectroscopy (EDS). The results showed that the most effective flux used was Silicon dioxide. A-TIG welding with ▫$SiO_2$▫ flux enabled good results in visual inspection, macrostructure analysis, band test and tensile strength test. However, oxide inclusions have been found in weld metal in significant percentage which could indicate the possible degradation of electrical conductivity of the Cu-ETP sheets. A-TIG welding Cu-ETP activating flux silicon dioxide varjenje A-TIG Cu-ETP aktivni delci silicijev dioksid true false false Angleški jezik Slovenski jezik Neznano 2025-02-25 09:57:47 2025-02-25 09:57:53 2025-02-26 04:16:56 0000-00-00 00:00:00 2024 0 0 Str. 8-16 Vol. 10 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-01-01 621.791 2562-4571 10.11159/ijmmme.2024.002 227220995 RAZ_Busic_Matija_2024.pdf RAZ_Busic_Matija_2024.pdf 1 98637B68029E845410CE0484450486A7 d356cedf2e60a0b0ba04c638ddbd340657cfd68e59813806be35a036ff145b43 e55e5f74-f356-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=200012 https://ijmmme.avestia.com/2024/002.html 1 af847fee-f355-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=200011 Fakulteta za strojništvo 0 0 0