Study of the corrosion behavior of magnesium alloy weldings in NaCl solutions by gravimetric tests
DOI:
https://doi.org/10.3989/revmetalm.050Keywords:
AZ31, Corrosion, Immersion test, GTAW, NSS testAbstract
In this article, the corrosion behavior of commercial AZ31 welded plates in aqueous chloride media was investigated by means of gravimetric techniques and Neutral Salt Spray tests (NSS). The AZ31 samples tested were welded using Gas Tugsten Arc Welding (GTAW) and different filler materials. Material microstructures were investigated by optical microscopy to stablish the influence of those microstructures in the corrosion behavior. Gravimetric and NSS tests indicate that the use of more noble filler alloys for the sample welding, preventing the reduction of aluminum content in weld beads, does not imply a better corrosion behavior.
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