GH4169 is a precipitation-strengthened nickel-based high-temperature alloy, in the temperature range of -253 ~ 650 ℃ has a good overall performance, 650 ℃ below the yield strength of the deformation of high-temperature alloys in the first place, and has a good fatigue, radiation, oxidation, corrosion resistance, as well as good machining properties, good welding performance. Able to manufacture a variety of complex shaped parts, in the aerospace, nuclear energy, petroleum industry and extrusion molds, in the above temperature range has gained an extremely wide range of applications.
| 50.00% to 55.00 | |
| 17.00% to 21.00 | |
| 2.80% to 3.30% | |
| 0.65% to 1.15% | |
| 0.20 to 0.80 percent |
In addition, the alloy contains small amounts of carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), niobium (Nb), cobalt (Co), copper (Cu) and other elements.
GH4169 high temperature alloy excels in mechanical properties, especially in high temperature environments.
GH4169 high-temperature alloy is a nickel-based high-temperature alloy with the ability to maintain good mechanical properties at extreme temperatures. It exhibits good overall properties over the temperature range of -253℃ to 700℃, which allows it to maintain stable mechanical properties in extreme environments.The yield strength of GH4169 alloy ranks first among deformed high-temperature alloys up to 650℃, which allows it to withstand high loads and high-temperature environments. In addition, GH4169 alloy has good fatigue, radiation, oxidation and corrosion resistance, as well as good machinability and weldability. These properties enable GH4169 alloy to manufacture a variety of components with complex shapes and meet a variety of demanding working environments and requirements.
The excellent performance of GH4169 alloy stems from its unique chemical composition and microstructure. It is mainly composed of nickel, chromium, iron and other elements, through the addition of tungsten, molybdenum and other elements for solid solution strengthening, as well as aluminum, titanium and other elements to form an aging strengthened phase, to further improve the mechanical properties of the alloy. At the same time, the addition of elements such as boron and magnesium helps to purify the grain boundaries and strengthen the grains, enhancing the overall performance of the material. This complex compositional design and precise process control enable GH4169 alloy to maintain high strength and good toughness at high temperatures, while demonstrating excellent oxidation and corrosion resistance.
GH4169 alloy has a wide range of applications, including aerospace, petrochemical, and nuclear energy. In the aerospace field, GH4169 alloy is used to manufacture key components such as blades and turbine disks of aircraft engines; in the aerospace field, it is used to manufacture key components such as nozzles and combustion chambers of rocket engines; and in the energy field, it is used to manufacture structural parts of nuclear reactors, blades of gas turbines and other key components. All these applications fully demonstrate the excellent performance of GH4169 alloy in high temperature, high pressure and high load working environment.
The alloy has different heat treatment regimes to control the grain size, control the δ-phase morphology, distribution and quantity, so as to obtain different levels of mechanical properties. The alloy heat treatment regimes are divided into 3 categories:
Ⅰ: (1010~1065)℃±10℃, 1h, oil-cooled, air-cooled or water-cooled +720℃±5℃, 8h, to 50℃/h furnace cooling to 620℃±5℃, 8h, air-cooled.
The material treated by this system grain coarsening, grain boundaries and intragranular are no δ-phase, the existence of notch sensitivity, but to improve the impact properties and resistance to low-temperature hydrogen embrittlement is beneficial.
Ⅱ: (950 ~ 980) ℃ ± 10 ℃, 1h, oil cooling, air cooling or water cooling +720 ℃ ± 5 ℃, 8h, to 50 ℃ / h furnace cooling to 620 ℃ ± 5 ℃, 8h, air cooling.
Ⅲ: 720℃±5℃, 8h, to 50℃/h furnace cooling to 620℃±5℃, 8h, air cooling.
After treatment by this system, there is less δ phase in the material, which can improve the strength and impact properties of the material. This system is also known as direct aging heat treatment system.
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