1. Definition of Incoloy 907 alloy
Incoloy 907 alloy is a nickel-based superalloy with excellent high-temperature strength and corrosion resistance. The alloy is a castable malleable superalloy, which can be used in various high-temperature applications, such as aerospace, aeroengine, gas turbine, nuclear energy, chemical industry and other fields.
2. Chemical composition
The chemical composition of Incoloy 907 alloy is as follows:
Element | content (mass fraction, %)
—|—
Ni | 42.0-48.0
Fe | 25.0-31.0
Co | 10.0-12.0
Cr | 9.0-11.0
Ti | 3.15-4.15
Al | 2.2-2.8
Cu | ≤0.50
Mn | ≤0.50
Si | ≤0.35
C|≤0.08
B|≤0.015
Zr | ≤0.015
3. Production standard
The production standards of Incoloy 907 alloy mainly include American standards AMS 5801 and AMS 5542. These standards stipulate the chemical composition, physical properties, mechanical properties, processing properties, heat treatment and testing requirements of Incoloy 907 alloy.
4. Corrosion resistance
Incoloy 907 alloy has good corrosion resistance and can maintain stable performance under high temperature and corrosive environment. The alloy can resist oxidation, reduction and complex corrosive media, such as nitric acid, sulfuric acid, hydrofluoric acid, chloride, etc. At the same time, the alloy also has excellent hot corrosion resistance and fatigue crack growth performance.
5. Typical application range
Incoloy 907 alloy is widely used in aerospace, aeroengine, gas turbine, nuclear energy, chemical industry and other fields. Specific applications include:
1. Aerospace field: high-temperature components such as aero-engine turbine blades, turbine disks, turbine cover plates, combustion chambers, and gas turbine impellers.
2. Chemical industry: chemical reactors, hydrogenation reactors, hydrocracking reactors, conversion reactors and other equipment in high-temperature oxidizing and reducing environments.
3. Nuclear energy field: fuel elements of nuclear reactors, reactor pressure vessels and internal structural parts of nuclear reactors, etc.
4. Other fields: high-temperature steam generators, high-temperature heating furnaces, industrial furnaces and other high-temperature equipment.
6. Processing and heat treatment
Incoloy 907 alloy has certain machinability and forgeability, and can achieve different performance and shape requirements through a variety of processing and heat treatment processes.
1. Thermal processing
Incoloy 907 alloy has good plasticity and forgeability, and can be hot-worked at high temperature. Commonly used thermal processing methods include forging, rolling, extrusion, stretching, etc. During the hot working process, attention should be paid to controlling the temperature and speed, avoiding excessive heating and excessive stress, so as to ensure that the properties and shape of the alloy are not affected.
2. Cold working
Incoloy 907 alloy has poor cold working performance, so it is not suitable for cold working. If cold working is required, low temperature tempering can be used to eliminate the stress and hardness caused by cold working.
3. Heat treatment
Incoloy 907 alloy can adjust its performance and structure through a variety of heat treatment processes. Commonly used heat treatment methods include solid solution + aging, annealing, normalizing + tempering, etc. During heat treatment, it is necessary to control the temperature, time and cooling rate to ensure that the performance and structure of the alloy meet the requirements.
7. Machining
The machinability of Incoloy 907 alloy is poor, because its hardness and toughness are relatively high, and it also has certain plasticity. Therefore, it is necessary to use cemented carbide tools when machining, and at the same time adopt appropriate cutting parameters, such as cutting speed, feed rate and depth of cut. In addition, adequate cooling and lubrication are required to avoid excessive heat and stress.
8. Welding
Incoloy 907 alloy has good welding performance and can be connected by various welding methods, such as TIG welding, MIG welding, arc welding, plasma welding, etc. When welding, it is necessary to select appropriate welding materials and shielding gas to avoid excessive heat and stress, and to carry out adequate pre-preparation and post-processing. Recommended welding materials include ERNiCrCoMo-1, ERNiCrCoMo-2, etc.
9. Range of available products
Incoloy 907 alloy can produce a wide range of products, including:
1. Plate: thickness 0.3-50mm, width ≤ 2000mm, length ≤ 6000mm.
2. Pipe material: outer diameter 6-300mm, wall thickness 0.5-20mm, length ≤12000mm.
3. Rod: diameter 6-300mm, length ≤ 6000mm.
4. Wire/wire: diameter 0.05-8mm, length ≤1000m.
5. Special-shaped parts: customized production can be carried out according to customer requirements, such as forgings, plates, pipes, bars, etc.
The above products can be supplied in different heat treatment states, such as solid solution + aging, annealing, normalizing + tempering, etc., to meet different application requirements. At the same time, it can also be processed and customized according to customer requirements, such as cutting, drilling, grinding, polishing, stamping, bending, etc., to meet different shape and size requirements.
In short, Incoloy 907 alloy is a nickel-based superalloy with good high-temperature strength and corrosion resistance, which is widely used in aerospace, aeroengine, gas turbine, nuclear energy, chemical industry and other fields. The alloy can be processed through a variety of processing and heat treatment processes to achieve different performance and shape requirements, while also requiring attention to control temperature and speed to avoid excessive heating and excessive stress. When welding, appropriate welding materials and shielding gas should be selected, and adequate pre-preparation and post-processing should be carried out. Incoloy 907 alloy offers a wide range of products and can be customized according to customer requirements to meet different application requirements.
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Post time: Aug-26-2023
