Description and Initial Calibration of the Langley 12-inch Hypersonic Ceramic-heated Tunnel
| Author | : Louis E. Clark |
| Publisher | : |
| Total Pages | : 60 |
| Release | : 1965 |
| Genre | : Hypersonic wind tunnels |
| ISBN | : |
Description And Initial Calibration Of The Langley 12 Inch Hypersonic Ceramic Heated Tunnel
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Langley Hotshot Tunnel Operations with Helium at Mach Numbers in Excess of 30
| Author | : Charles George Miller |
| Publisher | : |
| Total Pages | : 90 |
| Release | : 1970 |
| Genre | : Aerodynamics |
| ISBN | : |
NASA Scientific and Technical Reports
| Author | : United States. National Aeronautics and Space Administration Scientific and Technical Information Division |
| Publisher | : |
| Total Pages | : 1440 |
| Release | : 1966 |
| Genre | : Aeronautics |
| ISBN | : |
Alloy Softening in Group VIA Metals Alloyed with Rhenium
| Author | : Joseph R. Stephens |
| Publisher | : |
| Total Pages | : 892 |
| Release | : 1970 |
| Genre | : Microstructure |
| ISBN | : |
An investigation was conducted to determine the effect of temperature and composition on alloy softening in group VIA metals Cr, Mo, and W alloyed with Re. Results showed that alloy softening was similar in all three alloy systems occurring at homologous temperatures less than 0.16 and at Re concentrations less than 16 atom percent. Rhenium content required to produce a hardness minimum diminished rapidly in all three systems with increasing test temperature. The similarities in hardness behavior in these three alloy systems suggesat common softening mechanism which may arise from lowering the Peierls stress.
