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Flaw growth of 6al-4v sta titanium in nitrogen tetroxide with low nitric oxide content
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bixler, W. D. |
| Copyright Year | 1972 |
| Description | The sustained load flow growth characteristics of surface flowed 6Al-4V STA titanium specimens were determined when exposed to nitrogen tetroxide N2O4 having nitric oxide (NO) concentrations of 0.06 to 0.30%. Test temperatures ranged from 70 to 150 F. It was observed that the threshold stress intensity for the titanium decreased abruptly below on NO concentration of 0.18% and also decreased as the temperature increased. The threshold stress intensity was determined to be greater than or equal to 60% of the critical stress intensity for NO concentrations of 0.18 to 0.30% and temperatures of 90 and 120 F. Sustained load tests conducted in N2O4 vapor with a 0.30% NO concentration at 120 F indicated the threshold to be also greater than or equal to 60% of critical. |
| File Size | 4275758 |
| Page Count | 38 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810014709 |
| Archival Resource Key | ark:/13960/t1wd8mw1w |
| Language | English |
| Publisher Date | 1972-05-01 |
| Access Restriction | Open |
| Subject Keyword | Metallic Materials Stress Analysis Stress Intensity Factors Yield Point Temperature Effects Nitric Oxide Titanium Nitrogen Tetroxide Lunar Module Crack Propagation 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 |
