GH4163 is a Ni-Cr-Co-based precipitation-hardened deformed superalloy that can be used in temperatures up to 850 °C. The alloy exhibits good oxidation resistance below 800, has high yield strength and creep strength, and has excellent performance in strain aging cracks, with excellent resistance to cold and heat fatigue. GH4163 alloy has satisfactory formability and welding performance, and is suitable for making plate welded structural parts and load-bearing parts of the main combustion chamber and afterburner combustion chamber of aero engines, and its main products include hot-rolled and cold-rolled plates, hot-rolled and forged bars, cold-drawn (rolled) seamless pipes and rings.
In terms of application, GH4163 alloy has been widely used in the manufacture of flame cylinders, afterburner cylinders, mounting edges, mounts and pipe fittings and other parts of aero engines, and its batch production and use are good. The alloy is welded in a solid solution state and can be joined by spot welding, seam welding and hydrogen arc welding. It is worth noting that phase precipitation may occur in alloys during long-term aging at high temperatures or long-term stress aging.
Welded structural parts refer to components connected by welding methods, while load-bearing parts are components used to bear and transmit loads in mechanical structures. The reason why GH4163 alloy can be used in welded structural parts and load-bearing parts is mainly due to its excellent performance in high-temperature environments. The alloy shows good oxidation resistance below 800, which ensures that the parts are not susceptible to oxidation and corrosion in a high-temperature working environment. In addition, its high yield strength and creep strength, as well as its good resistance to cold and heat fatigue, enable it to withstand complex mechanical stresses in high-temperature environments.
GH4163 alloy follows GB T 14992, GJB 1952A, GJB 2297A, GJB 3165A, GJB 3317A, GJB 5301, HB Z 140 and other related technical standards to ensure the reliability and consistency of its production and application. In terms of smelting process, non-vacuum induction furnace and electroslag remelting, or non-vacuum induction furnace and vacuum self-consumption, or non-vacuum induction furnace and vacuum arc remelting, or vacuum induction furnace and electroslag remelting, or vacuum induction furnace and vacuum self-consumption, or vacuum induction furnace and vacuum arc remelting are used to ensure the uniformity and purity of the alloy.
Compared with other superalloys, GH4163 alloy has competitive advantages in oxidation resistance, strength and fatigue properties in high-temperature environments. Its high service temperature range and good mechanical properties make GH4163 alloy an ideal choice for applications in high-temperature environments such as aero engines.