Experimental research on high frequency fatigue and dynamic tensile tests at elevated temperatures
Temperature and strain rate effects on fatigue life and tensile properties of annealed stainless steel and titanium alloy
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Temperature and strain rate effects on fatigue life and tensile properties of annealed stainless steel and titanium alloy
Creep analysis of refractory metal alloys at high temperatures under ultrahigh vacuum conditions
Weldability and thermal stability of refractory metal alloys
Effect of oxygen contamination on weldability of refractory metal alloys
Opacity-probability distributions for CO, computing theoretical spectra of line absorption coefficient, discussing effects of temperature and/or turbulent velocity
Solar spectral irradiance measurements at different altitudes, using multichannel radiometers
Venus vegetative life suggested from algae growth under pure carbon dioxide in hot acid media at high pressures
Long-time temperature stability of refractory metal alloys and weldability determinations
Electromagnetic field effects on heat transfer of two temperature gaseous plasma
Post weld annealing for stabilizing tungsten alloy weld structure
Mechanical property tests of nickel, titanium, and iron alloys in 5000 psig gaseous helium and hydrogen at various temperatures
Solar cell array fabrication for operation at 173- 383 K, discussing honeycomb sandwich substrate using epoxy-novolac-fiberglass facings and Al core
Venus life forms, describing algae grown in pure carbon dioxide under pressure in acidic nutrient media at high temperatures
Atmospheric neutron production by cosmic radiation over sunspot cycle, measuring energy spectrum with airplanes and balloon-borne instruments
Stress effect on hydrogen distribution at high temperatures in titanium and Ti-Al-Mo-V alloy
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Simple tool for measuring relative cable tension is described, which weighs approximately two pounds, and can be produced at one-tenth cost of present tools.
Creep tests were conducted on two tantalum alloys (ASTAR 811C and T-111 alloy), on a molybdenum alloy (TZM), and on CVD tungsten. The T-111 alloy 1% creep life data have been subjected to Manson's station function analysis, and the progress on this analysis is described. In another test program, the behavior of T-111 alloy with continuously varying temperatures and stresses has been studied. The results indicated that the previously described analysis predicts the observed creep behavior with reasonable accuracy. In addition to the T-111 test program, conventional 1% creep life data have been obtained for ASTAR 811C alloy. Previously observed effects of heat treatment on the creep strength of this material have been discussed and a model involving carbide strengthening primarily at the grain boundaries, rather than in a classical dispersion hardening mechanism, has been proposed to explain the observed results.