Galvanic corrosion of Al alloy
Galvanic corrosion of Al alloy
(OP)
I want to couple 5xxx series and 6xxx serie Al alloys so want to know if there might be a possibility of galvanic corrosion when immersed under seewater/corrosive medium since they are both Al and i assume that they might be close to each other in the series (Galvanic Series.





RE: Galvanic corrosion of Al alloy
Regards,
Cory
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RE: Galvanic corrosion of Al alloy
http
hope this help
regards
S.
http://www.corrosionist.com
RE: Galvanic corrosion of Al alloy
RE: Galvanic corrosion of Al alloy
http
regards
S.
http://www.corrosionist.com
RE: Galvanic corrosion of Al alloy
RE: Galvanic corrosion of Al alloy
Now, the bad news: In many 5000-series alloys, particularly those above 2.5% Mg, poor temperature control during initial processing or any exposure to high temperatures (e.g., storage in summer sunlight), segregation of Mg to the grain boundaries occurs. This Mg (or Mg2Al3 given enough time) is anodic to the α-Al solid solution matrix. So, intense localized galvanic corrosion can occurs. Commonly called 'cauliflower' as it resembles white florets.
A good idea to anodize or else conversion coat + paint.
RE: Galvanic corrosion of Al alloy
I'm not an expert on Al materials, try also to look on this website, i think is the best site regarding Al. http://al
hope this help
regards
Strider
http://www.corrosionist.com