Evaluation of the Stress Corrosion Susceptibility of Titanium Sheet Alloys Coated with High Temperature Sealants.

摘要

Screening tests on self-stressed beam specimens were conducted using cyclic temperature exposures to determine the stress-corrosion susceptibility of titanium alloys in contact with high temperature fuel tank sealants. Fluorinated Viton type sealants produced a relatively high degree of a stress-corrosion attack while the titanium alloys were relatively unaffected by a polyimide sealant. The duplex annealed Ti-8Al-1Mo-1V alloy and the Ti-6Al-4V alloy showed the greatest resistance to stress-corrosion attack while the beta alloy Ti-13V-11Cr-3Al was the most susceptible. (Author)