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Flaw growth of 7075, 7475, 7050 and 7049 aluminum alloy plate in stress corrosion environments
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dorward, R. C. Hasse, K. R. |
| Copyright Year | 1976 |
| Description | Marine atmosphere and laboratory stress corrosion test results on smooth and precracked specimens from 7075, 7475, 7050, and 7049 alloy plates (1.25 and 3.0-in. thick) are presented. It is shown that for a given strength level, alloys 7050-T7X and 7049-T7X have superior short-transverse stress corrosion resistance (SCR) to 7X75-T7X. At typical strength levels above the minimum, for example, SCR of these alloys is considerably better than that of 7075-T76, and approaches that of 7075-T73. Alloy 7475 maintains an advantage in the area of fracture toughness, however, because it can be thermally processed to give particularly clean microstructures. Results from precracked specimens are in good qualitative agreement with those obtained from smooth specimens. Although both specimen types are capable of distinguishing between -T6, -T76 and -T73 tempers in relatively short time periods the precracked specimen provides more information about crack growth rates. |
| File Size | 24298002 |
| Page Count | 217 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770019328 |
| Archival Resource Key | ark:/13960/t2896099k |
| Language | English |
| Publisher Date | 1976-10-15 |
| Access Restriction | Open |
| Subject Keyword | Metallic Materials Corrosion Resistance Aluminum Alloys Stress Corrosion Marine Environments Fracture Strength 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 |
