Superalloy refers to a kind of metal material based on iron, nickel and cobalt, which can work for a long time under the action of high temperature and certain stress above 600, and has excellent high-temperature strength, good oxidation and hot corrosion resistance, good fatigue performance, fracture toughness and other comprehensive properties, also known as "superalloy".
Alloy B-2 is a nickel-based alloy that is widely used in aerospace, petrochemical, energy and other fields because of its excellent corrosion resistance and high temperature performance.
alloy b-2SuperalloysMainly composed of nickel (about 63%), iron (about 22%) and cobalt (about 13%)composition, while also containing:A small amount of chromium, molybdenum, niobium and other elements。These elements play an important role in alloys, such as enhancing the strength and toughness of alloys, improving oxidation resistance and corrosion resistance, etc.
AlloyB-2 alloy has a high melting point (about 1330) and a coefficient of thermal expansion (about 11.).3×10^-6/℃）。
At room temperature,The density of the alloy is about 89g/cm³，At high temperatures, the density decreases slightly. In addition, the alloy has good thermal and electrical conductivity.
Alloy B-2 superalloy has excellent mechanical properties, including high strength, high rigidity and good fatigue properties. At room temperature, its tensile strength can reach 890MPa, the yield strength is 410MPa, and the elongation is 30%. At high temperatures, its strength and elongation decrease, but remain high. In addition, the alloy also has good corrosion and oxidation resistance, and can resist various chemical corrosion and high-temperature oxidation environments.
Process performance
Alloy B-2 superalloy has good machinability and weldability. During the machining process, care should be taken to control the temperature and cooling rate to avoid cracks and deformation. The alloy can be welded by methods such as argon arc welding, laser welding, and brazing, and the welded joints have good strength and toughness. In addition, the alloy also has good casting properties and heat treatment properties.
As an excellent high-temperature material, Alloy B-2 superalloy has a wide range of application prospects. In the future, with the development of aerospace, petrochemical and energy fields, its demand will continue to increase. At the same time, in order to give full play to the performance advantages of this alloy, it is necessary to further study the laws of its preparation process, microstructure, performance evolution and other aspects, so as to provide a more reliable basis for practical application. Mechanical parts