GH3128 superalloy is a nickel-based alloy that is mainly composed of elements such as nickel, chromium, and molybdenum. The following is a brief introduction to the detailed properties and uses of GH3128 superalloy:
1.Material: GH3128 superalloy is a nickel-based superalloy with good high-temperature performance and corrosion resistance.
2.Chemical composition: The chemical composition of GH3128 superalloy mainly contains about 59% 63% nickel, 19% 22% chromium, 8% 11% molybdenum, 35%～ 5.5% iron, 09%～1.5% aluminium and other elements. In addition, it also contains some trace elements such as titanium, zirconium, niobium, vanadium, etc.
3.Hardness: The hardness of GH3128 superalloy is HB 250 310.
4.Density: The density of GH3128 superalloy is about 819g/cm³。
5.Heat treatment: GH3128 superalloy is usually solution treated (1050 1080) and aged (750 780) to improve its strength and heat resistance.
6.Mechanical properties: GH3128 superalloy has good strength, ductility and creep resistance at high temperatures. Its yield strength is 980MPa and tensile strength is 1100MPa.
7.Mechanical properties: GH3128 superalloy has good low cycle fatigue properties, oxidation resistance and stress corrosion crack resistance. At high temperatures, a dense oxide film will form on the surface of the alloy, which effectively prevents oxidation and corrosion.
8.Applications: Due to its excellent high-temperature performance and corrosion resistance, GH3128 superalloy is widely used in aerospace, petrochemical, nuclear engineering, shipbuilding, automobile manufacturing and other fields. For example, it is used in the manufacture of turbine blades, combustion chambers, gas turbines, nozzles, and other high-temperature components of aero engines.
9.Welding process: The welding process of GH3128 superalloy is more complex, and TIG welding or arc welding is generally used. During the welding process, appropriate preheating and post-heat treatment measures need to be taken to ensure the quality and performance of the welded joints.
To sum up, GH3128 superalloy is a nickel-based alloy with good high-temperature properties, corrosion resistance and mechanical properties. It is widely used in the manufacture of key components in high-temperature environments such as aerospace, petrochemical, and nuclear engineering. In practical applications, the welding process and the quality of the welded joints are key and need to be strictly controlled.