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Generation of long time creep data on refractory alloys at elevated temperatures (Document No: 19720025882)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Sheffler, K. D. Ebert, R. R. |
| Copyright Year | 1971 |
| Description | Ultrahigh vacuum creep tests were conducted on tantalum, tungsten, and molybdenum alloys to develop creep data and to evaluate the influence of liquid lithium exposure on the creep behavior of the tantalum alloy T-111. Test conditions were generally selected to provide 1% creep in 1000 to 10,000 hours, with test temperatures ranging from 1600 to 2912 F (1144 to 1873 K). Tests on T-111 specimens exposed to vacuum and to liquid lithium for various times and temperatures showed large reductions in creep strength for exposures in the 1800 to 1900 F (1255 to 1310 K) range. Tests on the ASTAR 811c showed a significant influence of grain size on the creep strength of this material, with larger grain size specimens being significantly stronger above the equicohesive temperature of 2000 F (1366 K). |
| File Size | 2202169 |
| Page Count | 77 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720025882 |
| Archival Resource Key | ark:/13960/t8sb8v19r |
| Language | English |
| Publisher Date | 1971-11-08 |
| Access Restriction | Open |
| Subject Keyword | Materials, Metallic Tantalum Alloys Refractory Metal Alloys Lithium Ultrahigh Vacuum Tungsten Alloys Molybdenum Alloys Creep Tests 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 |
