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Stress-corrosion crack-growth study of titanium alloy ti-6al-4v exposed to freon pca and nitrogen tetroxide mon-1
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bjorklund, R. A. |
| Copyright Year | 1983 |
| Description | An experimental fracture mechanics program was performed to determine the stress corrosion crack growth sensitivity of the propellant tank material, titanium alloy Ti-6Al-4V, for aerospace satellite applications involving long term exposure to Freon PCA and nitrogen tetroxide MON-1. Sustained load tests were made at a 49 C (120 F) constant temperature using thin gauge tensile test specimens containing semielliptical surface flaws. Test specimen types included parent metal, center of weld, and weld heat affected zone. It was concluded that Ti-6Al-4V alloy is not adversely affected in a stress environment when exposed to Freon PCA for 1000 hours followed by exposure to nitrogen tetroxide MON-1 for 2000 hours at stress levels up to 80% of the experimental critical plane strain stress intensity factor. |
| File Size | 3127312 |
| Page Count | 70 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19830026835 |
| Archival Resource Key | ark:/13960/t7vm9368w |
| Language | English |
| Publisher Date | 1983-08-01 |
| Access Restriction | Open |
| Subject Keyword | Metallic Materials Solvents Long Term Effects Stress Corrosion Cracking Nitrogen Tetroxide Electron Microscopy Propellant Tanks Crack Propagation Titanium Alloys Welded Structures Spacecraft Components Freon Heat Affected Zone Chemical Composition Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
