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Einfluss unterschiedlicher Korngrößen und Texturen auf das Korrosionsverhalten der Aluminiumlegierung EN AW‐6082
Author(s) -
Händel M.,
Nickel D.,
Lampke T.
Publication year - 2011
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201100829
Subject(s) - corrosion , metallurgy , materials science , alloy , aluminium , pitting corrosion , grain size , fabrication , texture (cosmology) , medicine , alternative medicine , pathology , artificial intelligence , computer science , image (mathematics)
The fabrication and processing of aluminum alloys can result in the formation of different grain sizes and textures within the material. The effects of these differences on the corrosion behaviour of the commercially available alloy AA6082 have been investigated. The results of the macro‐ and microelectrochemical investigations have been compared with each other and with the resulting corrosion appearance. The observed corrosion damage is not always consistent with the measured corrosion and pitting potential. In the finer‐grained part, with a strongly preferred orientation of (002) planes parallel to the sample surface, less corrosion damage could be observed than in the coarser‐grained part. However, microelectrochemical measurements show a slightly lower pitting potential in the finer‐grained part, so that pitting is likely to start earlier in this area.