What is rene 80?
Abstract. Rene-80, as an alloy for production of the jet turbine blades, shows high mechanical properties as well as microstructure stability during the high temperature engine operation.
What are the properties of superalloys?
The main properties of superalloys are that they exhibit some combination of high strength at temperature; resistance to environmental attack (including nitridation, carbonization, oxidation and sulfidation); excellent creep resistance, stress-rupture strength toughness and metallurgical stability; useful thermal …
What is Rene material?
Rene 41 is a precipitation hardening, nickel-based high temperature alloy possessing high strength in the 1200/1800°F (649/982°C) temperature range. This alloy is designed for use in severely stressed high temperature applications.
What are some of the novel mechanical properties of superalloys?
Several key characteristics of a superalloy are excellent mechanical strength, resistance to thermal creep deformation, good surface stability, and resistance to corrosion or oxidation.
Why superalloys are used?
Superalloys are a group of nickel, iron–nickel and cobalt alloys used in jet engines. These metals have excellent heat resistant properties and retain their stiffness, strength, toughness and dimensional stability at temperatures much higher than the other aerospace structural materials.
What is waspaloy made of?
Waspaloy is a nickel-based superalloy used in very extreme environments. This metal is often used in applications involving very high temperatures, like in gas turbines. Waspaloy is nominally composed of Nickel 58%, chromium 19%, cobalt 13%, molybdenum 4%, titanium 3%, and aluminum 1.4%.
How superalloys can gain high strength at higher temperature?
Superalloys develop high temperature strength through solid solution strengthening and precipitation strengthening from secondary phase precipitates such as gamma prime and carbides. Oxidation or corrosion resistance is provided by elements such as aluminium and chromium.
What is gamma nickel?
The major phases present in most nickel superalloys are as follows: Gamma ( ): The continuous matrix (called gamma) is an face-centered-cubic (fcc) nickel-based austenitic phase that usually contains a high percentage of solid-solution elements such as Co, Cr, Mo, and W.
How do superalloys work?
What is the largest use for superalloys?
The corrosion-resistant superalloys are widely used in extreme environments where tremendous heat and corrosion resistance is paramount to the integrity of the end product. Chemical and petrochemical processing, power plants, and oil and gas industries widely use these superalloys.
What is waspaloy used for?
Waspaloy is used for gas turbine engine components that require considerable strength and corrosion resistance at high operating temperatures, including compressor and rotor discs, shafts, spacers, seals, rings and casings, and other miscellaneous engine hardware, aircraft assemblies and missile systems [30].
What is the re-solution temperature of René 80?
In the case of René 80 the solution temperature is about 1200 °C. According to the results of this study, re-solution occurs earlier at higher temperatures (after 5000h at 1000 °C and after 1000h at 1050 °C). 10% 20% 40% 50% 60% 70% 0 5000 10000 15000 20000 25000
Does temperature and time affect the microstructure of René 80 after aging?
The influence of temperature and time on the microstructure of René 80 after long term aging was examined. The alloy was subjected to aging heat treatments at five different temperatures ranging from 850°C to 1,050°C for five different times 1000h, 2000h, 5000h, 10000h and 20000h.
What is the modulus of a rubber polymer?
At high temperatures or low frequencies, the same polymer may display rubber-like behavior with a low modulus of 106 N/m2 to 107 N/m2 and extension larger than 100% without any permanent set. At still higher temperatures, the polymer behaves like a highly viscous liquid.