The Effect of Oxide Thickness on the Hot Salt Stress Corrosion Susceptibility of Ti-6Al-4V

The hot salt stress corrosion susceptibility of Ti-6Al-4V was investigated at 454 C (850 F) as a function of applied stress and pre-test oxidation temperature. Anodizing was also tested as a method of oxide application. For the prescribed test conditions, the threshold stress for the alloy was determined to be 20 to 25 ksi. Hot salt stress corrosion susceptibility, as determined by post-test ductility, was not significantly influenced by either pre-test oxidation temperature or the manner in which the oxide was applied.