SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Residual stress, strength, and toughness response of high strength aluminum alloys subjected to time-temperature treatments
Effect of thermal and mechanical treatments on mechanical properties of nickel and certain nickel-base alloys
Unified treatment to predict turbulent fluxes in hot and multicomponent flows around launch vehicles
Coefficients of space charge effects for growing oxide films, derived from perturbation treatment, evaluated in terms of boundary concentrations of diffusing species
Enthalpy of gas stream, calorimeter surface treatment and heat transfer measurement errors in arc-heated tests
Electronic relaxation of shock-heated nonequilibrium argon plasma flow in microscopic- macroscopic treatment
Study determines the heat treatment cycle of aluminum casting alloy M-45 which will increase the strength levels of the alloy while maintaining optimum stress corrosion resistance. Evidence indicates that present production castings are overaged too severely to take full advantage of the strength of the alloy.
Rheological disturbances and their treatment in clinical surgery
Surface treatment techniques of beryllium for spacecraft structure application
Spin inertia culture system in waste treatment in closed ecological system
Perturbation treatment for molecular configuration using product of atomic or molecular orbits as zero-order wave function
Fokker-Planck damping introduced into Fourier- Hermite representation of Vlasov equation produces Landau and Van Kampen treatments
Electronic relaxation of shock-heated nonequilibrium argon plasma flow in microscopic- macroscopic treatment
Tests demonstrate the room temperature ductility of degraded Rene 41 can be increased to acceptable values by solution heat treatment at a temperature of 2050 degrees to 2150 degrees F /1 to 2 hours/ and cooling through a controlled temperature range followed by normal aging in air /16 hours at 1400 degrees F/.
Cooling of Rene 41 prior to welding reduces the incidence of cracking during post-weld heat treatment. The microstructure formed during the slow cooling rate favors elevated temperature ductility. Some vestiges of this microstructure are apparently retained during welding and thus enhance strain-age crack resistance in air.
Cadmium sulfide dark conductivity as function of sulfur vapor pressure during heat treatment between 500 and 700 deg C
Effect of heat treatment on Inconel 718 nickel base alloys and on subsequent fabrication processes
Composition and heat treatment effects on high temperature strength of arc melted tungsten-hafnium-carbon alloys