20.500.12556/DKUM-97089 Electrochemical analysis of the corrosion resistance of the Al-alloy EN AW-5454-D and its welded joints An electrochemical evaluation of the corrosion resistance of the Al-alloy EN AW-5454-D and its welded joints made by MIG (Metal Inert Gas) and by laser hybrid (LH) welding was performed in this study. All the tested samples had a thickness of 4 mm, whereby all the samples’ surfaces were cleaned with a plasma cleaning process before the electrochemical testing to reduce the impact of contamination. The electrochemical behaviour was investigated in a 3.5 wt.% NaCl electrolyte over exposure periods of 1 h, 7 days, and 30 days using electrochemical methods and surface examination. The results demonstrate that the welding processes (MIG and LH) caused microstructural heterogeneities that reduce the corrosion resistance of the weld. The MIG-welded specimen showed worse properties than the LH-welded specimen in the electrochemical tests, as it had a higher corrosion current density, lower polarisation resistance, and higher layer capacitance. Due to long-term exposure to the immersion solution, despite the reduced susceptibility to uniform corrosion, the Al-alloy samples and their welds remained susceptible to pitting corrosion. Al-alloy welding electrochemical behaviour characterisation aluminijeve zlitine varjenje elektrokemijsko vedenje karakterizacija true false true MDPI Angleški jezik Slovenski jezik https://www.mdpi.com/1996-1944/19/4/750 Članek v reviji 2026-02-17 15:31:33 2026-02-17 15:31:33 2026-02-18 03:12:27 0000-00-00 00:00:00 2026 0 0 23 str. iss. 4, [article no.] 750 Vol. 19 Feb. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2026-01-21 2026-02-10 2026-02-14 669.715:620.1 268769539 10.3390/ma19040750 1996-1944 materials-19-00750.pdf materials-19-00750.pdf 1 11ADD16D0262C91C695F2D2AC9DBBC01 2325b5eb507886d4519c03fc7a8740b00d4d84eae07ebfb9b6f73a543a5f2abf ad7fdb13-0c0d-11f1-aedc-00155d580e1a https://dk.um.si/Dokument.php?lang=slv&id=203414 https://www.mdpi.com/1996-1944/19/4/750 0 b487aea2-0c0d-11f1-aedc-00155d580e1a https://dk.um.si/Dokument.php?lang=slv&id=203415 Fakulteta za strojništvo 0 0 0