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2016, vol. 61, br. 1, str. 5-12
Uticaj sastava zaštitne atmosfere na zavarljivost legure AIMg4.5Mn
aUniverzitet u Beogradu, Mašinski fakultet
bTehnikum Taurunum, Zemun, Beograd
cUniverzitet u Beogradu, Mašinski fakultet, Inovacioni centar
Ključne reči: aluminijum; legura AIMg4.5Mn; metal šava; zavarljivost; zaštitna atmosfera; poroznost
Sažetak
U ovom radu je prikazano kako vrsta zaštitne atmosfere utiče na zavarljivost legure aluminijuma AlMg4.5Mn. Pripremljene ploče su zavarene TIG postupkom u četiri različite zaštitne atmosfere. Posle izvedenog zavarivanja, urađena su metalografska ispitivanja, ispitivanje zatezne čvrstoće zavarenog spoja u celini, kao ispitivanje tvrdoće zavarenog spoja. Pokazano je kako vrsta zaštitne atmosfere utiče na oblik šava, dubinu uvarivanja, razlivanje dodatnog materijala, pojavu poroznosti u metalu šava, kao i na vrednosti zatezne čvrstoće i tvrdoće. Šavovi dobijeni zavarivanjem u zaštitnoj atmosferi Ar+50%He+0,015%N2 pokazali su najbolji izgled metala šava, pri čemu je dobro razlivanje dodatnog materijala a odnos širine i visine šava zadovoljavajući. Takođe je pokazano da ovako dobijeni šavovi imaju najmanju poroznost metala šava.
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O članku

jezik rada: srpski
vrsta rada: izvorni naučni članak
DOI: 10.5937/zzk1601005C
objavljen u SCIndeksu: 27.04.2016.

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