Complex pitting corrosion in long-term immersed exposures of 6060 aluminum alloys in temperate natural seawater

Title: Complex pitting corrosion in long-term immersed exposures of 6060 aluminum alloys in temperate natural seawater
Creator: Liang, Mengxia; Melchers, Robert E.; Chaves, Igor A.
Relation: ARC.DP140103388 http://purl.org/au-research/grants/arc/DP140103388
Relation: Corrosion Vol. 74, Issue 11, p. 1272-1287
Publisher Link: http://dx.doi.org/10.5006/2883
Publisher: National Association of Corrosion Engineers (NACE)
Resource Type: journal article
Date: 2018
Description: Novel observations of changes in pitting morphology of 6060 aluminum alloys immersed for periods of 3 y, 3.5 y, and 4 y in temperate seawater are reported. They indicate that the initiation and propagation of pitting involve several different mechanisms. These result in small (semi-) hemispherical pits, irregular polygonal-shaped larger pits, and also extremely large and deep pits with complex morphologies. Principally intergranular corrosion and crystallographic pitting were observed. It is proposed that the changing nature of the pit morphologies is associated with the accumulated corrosion products and, to a lesser extent, affected by the marine growth attached to the metal surface.
Subject: aluminum alloys; intergranular corrosion; pitting corrosion; seawater
Identifier: http://hdl.handle.net/1959.13/1410707
Identifier: uon:36217
Identifier: ISSN:0010-9312
Language: eng
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