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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.
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Alloy combines superior strength at elevated temperatures with improved ductility at lower temperatures relative to unalloyed tungsten. Composed of tungsten, rhenium, hafnium, and carbon, the alloy is prepared by consumable electrode vacuum arc-melting and can be fabricated into rod, plate, and sheet.
Effect of quenching on ductile-brittle bend transition temperature of Cr-35Re wire
Effect of ductile cladding on bend transition temperature of wrought tungsten
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/.
Reinforcing aluminum, aluminum alloys, and ductile epoxies with short, brittle fibers and high modulus filaments, and boron carbide whisker growth
Chromium alloys with good low temperature ductility and superplasticity
Boron carbide whiskers for reinforcing brittle fibers of aluminum, aluminum alloys, or ductile epoxies
Role of chemical reactions in comminution mechanism of ductile metals into ultrafine powders by grinding
Ductility ratio data for high strength titanium alloys from specially designed experiments and notch strength tests
Reduction of ductile-to-brittle transition temperature for unalloyed chromium achieved in alloys resembling Cr-Re system
To produce high strength alloy steel with retention of ductility, include tempering, cooling and subsequent tempering. Five parameters for optimum results are pretempering temperature, amount of strain, strain rate, temperature during strain, and retempering temperature.
Development and testing of ductile niobium alloy with silicide coating for rocket engine combustion chamber
Ductilizing of Group 6A elements by rhenium and other solutes
Reinforcement of ductile aluminum and epoxies with brittle high modulus filaments
Development of ductile oxidation-resistant cladding alloys for thoria dispersion, strengthened nickel and nickel-chromium
Ductile metal powder chemical reactions during comminution in pure or oxygenated water
Ductile fracture of polymers under stresses
Reactor irradiation effects on ductile brittle transition and stress-strain behavior of tungsten