An investigation was conducted to study the stress corrosion cracking
(SCC) tendency of a superplastically deformed aluminum-lithium-based a
lloy (AA X2094 [UNS A92094]) that had been received in a thermomechani
cally processed form suitable for dynamic recrystallization. Tensile s
pecimens made from sheets of this material were superplastically defor
med at a constant true strain rate of 2 x 10(-4)/s and a temperature o
f similar to 500 degrees C. Specimens then were subjected to stress co
rrosion testing using the slow strain rate tensile testing (SSRT) tech
nique at a constant initial strain rate of 2 x 10(-6)/s. Effects of di
fferent superplastic deformation variables and stress corrosion testin
g conditions on the stress-strain relationship of the test specimens w
ere studied.