GH4099 superalloy is a deformed superalloy based on nickel, chromium, aluminum, titanium and other elements, with excellent high-temperature strength, oxidation resistance and creep resistance. It can be used for a long time at high temperatures and is widely used in aerospace, energy, chemical industry and other fields.
1. Performance characteristics of GH4099 superalloy.
GH4099 superalloy has the following performance characteristics:
1.High temperature strength: GH4099 superalloy can still maintain high strength at high temperature, and has excellent creep resistance and fatigue resistance.
2.Oxidation resistance: GH4099 superalloy is not easy to oxidize at high temperature and has good oxidation resistance.
3.Creep resistance: GH4099 superalloy is not easy to deform at high temperatures and has good creep resistance.
4.Processing performance: GH4099 superalloy can be used for cutting, welding and other processing operations, and has good processing performance.
Second, the application field of GH4099 superalloy.
Because GH4099 superalloy has the above performance characteristics, it is widely used in the following fields:
1.Aerospace field: GH4099 superalloy can be used to manufacture high-temperature parts of aero engines, such as turbine disks, blades, etc.
2.Energy field: GH4099 superalloy can be used to manufacture high-temperature stoves, heat exchangers and other energy equipment.
3.Chemical industry: GH4099 superalloy can be used to manufacture high-temperature components of chemical equipment, such as reactors, distillation columns, etc.
3. Production and processing of GH4099 superalloy.
The production and processing of GH4099 superalloy needs to go through multiple steps, including melting, casting, forging, heat treatment, etc. The following is a brief introduction to its production and processing process:
1.Smelting: Nickel, chromium, aluminum, titanium and other elements are mixed together in a certain proportion, put into a melting furnace and heated to the melting point before smelting. During the smelting process, the temperature and composition should be controlled to ensure the quality of the alloy.
2.Casting: The melted alloy is poured into a mold for casting to form a casting of the desired shape. The temperature and cooling rate should be controlled during the casting process to obtain excellent casting quality.
3.Forging: The cast castings are heated and forged to improve the strength and toughness of the alloy by deformation. During the forging process, the deformation and temperature should be controlled to avoid defects such as cracks.
4.Heat treatment: The forged alloy is heat treated, and the microstructure of the alloy is adjusted by heating and cooling to achieve the desired mechanical properties. During the heat treatment process, the temperature and cooling rate should be controlled to avoid defects such as cracks.
Fourth, the development trend of GH4099 superalloy.
With the increasing demand for high-temperature materials in aerospace, energy, chemical and other fields, the development prospect of GH4099 superalloy is getting broader and broader. In the future, GH4099 superalloy will continue to develop in the direction of high strength, high toughness and high oxidation resistance. At the same time, with the continuous development of science and technology, new preparation and processing technologies will continue to emerge, bringing more possibilities for the development of GH4099 superalloy.
GH4099 superalloy chemical composition
Heat treatment regime
Extracted from HB Z140, **DT0160018, **DT0160020 and **DT0130021, the standard heat treatment system for each variety is:
A cold-rolled plate, (1080 1140) (up to 1160), air-cooled or fast-cooled, of which δ 3mm, heat preservation (8 10) min, δ3 mm 5 mm, heat preservation (10 15) min, HB 300 HV;
b Hot rolled bar, system :(1080 1120) keep warm for 1 hour and air cooled;System: 1090 10 heat preservation 2 hours air cooling + 900 10 heat preservation 5 hours air cooling;System: 1000 15 heat preservation 4 hours air cooling + 700 10 heat preservation 16 hours air cooling;
c. Large-scale forging rod, 1130 10 heat preservation (30 40) minutes air cooling + 900 10 heat preservation 4 hours air cooling;
D Welding wire, solution treated (1100 1140) air-cooled.