GH2907 is a Fe-Ni-Co-based precipitation-hardening low-expansion deformation superalloy, which is comprehensively strengthened by the addition of niobium, titanium, silicon and trace boron. The alloy has high strength, low expansion coefficient, good cold and heat fatigue resistance, and the elastic modulus is almost unchanged below 650, and the Curie point is 400 -450. The coefficient of expansion of the alloy below the Curie point is basically unchanged. It is suitable for manufacturing various rings and casings for aviation and aerospace engines used below 650.
Chemical elements;
Heat treatment system;
Extracted from HB Z 140, GJB 5261, HB 7682, Q'GYb 05067 and Q GYb 05069, there are two standard heat treatment regimes:
Regime A: 1040 15 l h ac or fast cooling +800 15 16h fc (55 h) 620 15 8h ac for brazed parts:
Regime B: 980 15 l h ac or fast cooling +775 15 16h FC (55 h) 620 15 8h AC, HB 375 302 for bars and rings.
GH2907 is a superalloy with excellent high-temperature properties. The following are the key performance characteristics of GH2907::
1.High temperature strength: GH2907 has excellent high temperature strength and can maintain good mechanical properties in high temperature environment.
2.Oxidation resistance: GH2907 has good oxidation resistance and can maintain good stability in high-temperature oxidation environment.
3.Corrosion resistance: GH2907 has good corrosion resistance to acid, alkali and other corrosive media.
4.Fatigue resistance: GH2907 has good fatigue resistance and can be used for a long time under cyclic load without fatigue damage.
5.Thermal fatigue resistance: GH2907 has good thermal fatigue resistance at high temperatures, and can withstand cyclic thermal loads without breaking.
GH2907 has good high-temperature mechanical properties, including high-temperature strength, oxidation resistance and corrosion resistance. By adjusting the alloy composition and heat treatment process, different mechanical properties can be obtained to meet the needs of different fields. GH2907 retains high strength and hardness at 700 degrees Celsius, making it suitable for mechanical parts at high temperatures.
GH2907 superalloy has broad application prospects in aerospace, energy, chemical industry, automotive and other fields. In the aerospace field, GH2907 superalloy can be used to make engine parts, high-temperature oxidation-resistant blades, etc. In the energy sector, GH2907 superalloy can be used in the manufacture of nuclear reactors and petrochemical equipment. In the chemical field, GH2907 superalloy can be used to make reactors, heat exchangers, etc. In the automotive sector, GH2907 superalloy can be used to make exhaust systems, high-temperature components, etc.
In short, with the development of science and technology and industrial progress, superalloys are also constantly developing and upgrading, at present, researchers are developing a series of new superalloys to improve their mechanical properties and processing properties, and explore their applications in a wider range of fields, in the future, superalloys will continue to play their unique advantages, become one of the important representatives in the field of high-performance materials.