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359 views
01:51 Jun-27-2005

gowrishankar

R & D, scientist
ISRO,
India,
Joined Nov 2008
34
SCC in aluminum

Sir,
what are the possible environments for SCC in aluminum alloy AA 2219?

GOWRISHANKAR W


 
05:51 Jun-27-2005

David Forsyth

R & D
TRI/Austin,
USA,
Joined Nov 2001
41
Re: SCC in aluminum You may want to check the article "Wusheng Hu, E. I. Meletis: Materials Science Forum 331 to 337
(2000) 1683." I don't have an ecopy of this.

In practical terms, intergranular corrosion attack in Al alloys is greatly assisted by poor machining/manufacturing methods. Exposed end grains in rolled plate, for example, are susceptible to pitting attack which serves as the nucleation site for intergranular cracks. All you need is some moisture, the intermetallic alloying elements at the grain boundary provide the potential.

Regards, Dave.

----------- Start Original Message -----------
: Sir,
: what are the possible environments for SCC in aluminum alloy AA 2219?
: GOWRISHANKAR W
------------ End Original Message ------------




 


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