Faculty of Mechanical Engineering, Lj. (FSLJ)
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Analiza lomnih površin obločno navarjene aluminijeve zlitine AlSi5 : zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni programKlenovšek, GalNaloga primerja karakteristiko lomnih površin pri nateznem in udarnem lomu materiala, glede na smer oblikovno obločnega navarjanja žice aluminijeve zlitine - AlSi5. Uporabljeni vzorci so bili ... izrezani iz navarjene stene in nato obremenjeni vzporedno oziroma pravokotno na smer navarjenih plasti. SEM (angl. SEM - scanning electron microscope) analizo lomnih površin smo izvedli z elektronskim vrstičnim mikroskopom visoke globinske ostrine. Pri analizi smo preverjali mikrostrukturne značilnosti prelomne površine. Rezultati analize so potrdili žilavi prelom materiala neodvisno od tipa preizkusa in orientacije preizkušanca glede na smer izgradnje izdelka. Bistvenih razlik med vzorci izrezanih vzporedno in pravokotno na dodajalne plasti ni bilo zaznati. Ostala opažanja med posameznimi vzorci so, da smo pri vzorcih lomljenih z udarnim preizkusom zaznali 200% višjo pogostost in 164% večji premer plinske poroznost kot pri vzorcih izdelanih za natezni preizkus. Povprečni premer plinskih por na prelomnih površinah je po izvedenem nateznem preizkusu znašal 39,49 ± 13,12 µm, po udarnem preizkusu pa 65,00 ± 22,41 µm. Razlika je posledica različnega načina izdelave preizkušancev ter izvedbe samega testa. Za izdelavo stene, iz katere so bili izrezani preizkušanci na udarni preizkus, so se za doseganje potrebne širine preizkušanca uporabili polnilni vari, ki so v vzorec vnesli višjo količino nečistoč in povečali izpostavljenost vara atmosferi.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [G. Klenovšek], 2023Language - slovenianCOBISS.SI-ID - 163397379
Author
Klenovšek, Gal
Other authors
Trdan, Uroš |
Klobčar, Damjan
Topics
diplomske naloge |
WAAM |
obločno navarjenje |
SEM analiza |
AlSi5 |
kovinski prelomi |
natezni test |
udarni test |
thesis |
WAAM |
Arc welding |
SEM analysis |
AlSi5 |
metal fractures |
tensile test |
impact test
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UN 0000001834 IN: 80001834 UN 1834 IN: 80001834 |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Klenovšek, Gal | |
Trdan, Uroš | 28906 |
Klobčar, Damjan | 20441 |
Source: Personal bibliographies
and: SICRIS
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