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The correlation between intergranular corrosion resistance and copper content in the precipitate microstructure in an AA6005A alloy

Marioara, Calin Daniel; Lervik, Adrian; Grønvold, Julie; Lunder, Otto; Wenner, Sigurd; Furu, Trond; Holmestad, Randi
Journal article, Peer reviewed
Accepted version
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Permanent link
http://hdl.handle.net/11250/2590796
Issue date
2018
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  • Publikasjoner fra CRIStin - NTNU [15212]
  • Institutt for fysikk [1519]
Original version
Metallurgical and Materials Transactions. A. 2018, 49 (10), 5146-5156.   10.1007/s11661-018-4789-7
Abstract
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.
Publisher
Springer Verlag
Journal
Metallurgical and Materials Transactions. A

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