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2020, vol. 70, br. 1, str. 47-51
Uticaj senzibilizacije na koroziju TIG zavarenog spoja Al-Mg legure
Vojnotehnički institut - VTI, Beograd

e-adresaljubica.radovic@vti.vs.rs
Projekat:
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije (institucija: Vojnotehnički institut - VTI, Beograd) (MPNTR - 451-03-68/2020-14/200325)

Ključne reči: Al-Mg-Mn legure; TIG zavarivanje; interkristalna korozija; senzibilizacija
Sažetak
Ispitan je uticaj senzibilizacije na interkristalnu koroziju zavarenog spoja AlMg6Mn legure zavarene TIG postupkom. Korišćene su metode skenirajuće elektronske mikroskopije (SEM) i test gubitka mase - NAMLT. Izvršeno je zavarivanje ploča AlMg6Mn legure debljine 8 mm. Kao dodatni materijal je korišćena žica S-AlMg5. Uzorci su senzibilizovani na 100°C u trajanju od 7 dana. Pokazano je da su zavareni spojevi osetljivi na interkristalnu koroziju nakon senzibilizacije. Gubitak mase u NAMLT testu je bio 70.7 mg/cm². Povećanje osetljivosti na interkristalnu koroziju je pripisano izraženom kontinuiranom taloženju Mg-faze duž granica zrna za vreme senzibilizacije.
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O članku

jezik rada: engleski
vrsta rada: neklasifikovan
DOI: 10.5937/str2001047R
primljen: 09.09.2020.
prihvaćen: 28.10.2020.
objavljen u SCIndeksu: 06.04.2021.
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