The correlation between intergranular corrosion resistance and copper content in the precipitate microstructure in an AA6005A alloy
Peer reviewed, Journal article
MetadataShow full item record
Original versionMetallurgical and Materials Transactions. A. 2018, 49 (10), 5146-5156. 10.1007/s11661-018-4789-7
A positive correlation is observed between the amount of Cu incorporated in hardening precipitates and intergranular corrosion resistance in an artificially aged Cu-containing 6005A alloy. Three mechanisms have been identified to increase Cu absorption in hardening precipitates: by increasing aging temperature, by pre-deformation, and by slow cooling from solution heat treatment. These findings demonstrate the possibility for development of new processing routes to produce Cu-containing Al-Mg-Si alloys with improved corrosion resistance.