20.500.12556/RUL-166137 Izdelava in analiza 3D navarjenih sten iz aluminijeve zlitine 7075 Manufacturing and analysis of 3D weld cladded aluminum alloy 7075 walls Aditivne tehnologije so vedno bolj pomembne v industriji, saj omogočajo izdelavo kompleksnih geometrij izdelkov z dobrim izkoristkom materiala. V magistrski nalogi je obravnavan vpliv parametrov pri navarjanju MIG na lastnosti 3D navarjenih sten iz aluminijeve zlitine 7075, ki je ključna v letalski industriji zaradi dobrega razmerja med trdnostjo in težo. Raziskava je vključevala izdelavo različnih vzorcev z variacijo parametrov. Za analizo materialnih in mehanskih lastnosti so bile uporabljene metode, kot so XRD merjenje zaostalih napetosti, EDS-analiza, meritve mikrotrdote, metalografska analiza in natezni preizkusi. Ugotovitve kažejo, da vibracije med navarjanjem zmanjšajo zaostale napetosti, vendar povečajo poroznost. Višji delež poroznosti vpliva na manjšo natezno trdnost in mikrotrdoto. Z mikrokemično EDS-analizo smo dokazali prisotnost različnih intermetalnih faz, vključno s S-fazo, θ-fazo, T-fazo in η-fazo. Additive technologies are becoming increasingly important in the industry because they enable the production of complex geometries with minimal waste. This master's thesis explores the impact of MIG welding parameters on the properties of 3D-weld cladded walls made from aluminum alloy 7075, which is crucial in the aerospace industry due to its excellent strength-to-weight ratio. The research involved creating various samples with different parameter variations. In the research, different methods, such as XRD residual stress analysis, EDS analysis, microhardness measurements, metallographic analysis, and tensile tests, were used to analyze the material and mechanical properties. The findings indicate that vibrations during welding reduce residual stresses but increase porosity. Higher porosity levels lead to lower tensile strength and microhardness. Microchemical EDS analysis confirmed the presence of various intermetallic phases, including S-phase, θ-phase, T-phase, and η-phase. 3D navaranje sten aluminijeva zlitina 7075 varjenje MIG dodajalne tehnologije XRD analiza zaostalih napetosti EDS-analiza mikrotrdota metalografska analiza 3D weld cladded walls aluminum alloy 7075 MIG welding additive manufacturing XRD residual stress analysis EDS analysis microhardness metallographic analysis true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2024-12-21 07:30:12 2024-12-21 07:30:15 2025-01-07 15:34:43 0000-00-00 00:00:00 2024 0 0 XXII, 68 str. 2024 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791:669.715(043.2) 270377 221245443 38451.pdf 38451.pdf 1 CD7DE4D09173A4ACB34DD8599613BC72 f254db18a02f556842c7704a655c960716cf5c1236b283794fe353db49b75f1f 75429aea-bf64-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=197538 Fakulteta za strojništvo 0 0 0