The stress corrosion cracking (SCC) behavior of the Al-Li alloy 8090 was evaluated using the slow strain-rate technique. The alloy was exposed to 0.5 M NaCl under potentiostatic conditions. A critical potential was found below which 8090 was resistant to SCC and above which it was highly susceptible to SCC. The critical potential controls the propagation of cracks and not the initiation. Material in the underaged, peak-aged and overaged conditions was equally susceptible to SCC.

Subject
Strain rate, Intergranular stress corrosion cracking, Cathodic potential, Crack propagation, Mechanical failure, Elongation, Pitting, Aluminum alloys, Alloys, Corrosion potential, Stress corrosion cracking, Aging, Step potential
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1988
Association for Materials Protection and Performance (AMPP)
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