GH159 high temperature alloy price High temperature alloy round bar price

GH159高温合金板材：

0.5-20mm价格

GH159高温合金圆棒：

0.8mm-220mm

Superalloy alloy is a new type of high-strength multi-phase cobalt-based superalloy developed on the basis of foreign multi-phase cobalt-based superalloys. Its main feature is to use cold deformation to first induce the generation of cross-network distribution of sheet-related phases in the face-centered cubic matrix to prevent the long-range movement of dislocations and produce strengthening, and then undergo aging treatment to precipitate and disperse the phase to supplement the strengthening. This alloy has comprehensive properties such as ultra-high strength, good plastic toughness and high stress corrosion resistance, and can still maintain its high strength characteristics at high temperatures. This alloy can be widely used not only in high-temperature fastening bolts and other parts of aeroengines, but also in ultra-high-strength fasteners for aircraft serving in stress corrosion environments. The main varieties supplied are cold drawn bars.
Cobalt-based superalloys
Material grades
Similar grades
Technical standards of materials
/Alloy cold-drawn bars for high-temperature fasteners
High-temperature fasteners Hard-drawn alloy alloy bars />Solid solution treatment~~water cooling, cold drawing deformation and aging treatment at room temperature~~air cooling.
Variety specifications and supply status
The cold-drawn bars that can be produced are cold-drawn.
Smelting and casting process
The alloy adopts a dual production process of vacuum induction and vacuum arc remelting.
Application Overview and Special Requirements
This alloy is mainly used for aero-engine fasteners. It has stable performance and can be used for a long time. It is currently the best aero-engine fastener material with the best comprehensive performance.
The alloy is mainly strengthened by cold deformation inducing a large number of gateway distribution phases. Therefore, the process parameters of cold drawing deformation must be strictly controlled. The deformation is too small and the strength is insufficient; the deformation is too large and the strength increases but the plasticity decreases. Practice has proven that the alloy has better overall properties when the amount of cold deformation is controlled at the lower limit.
Physical and chemical properties
Melting temperature range
Thermal conductivity
Table
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Cold drawn condition
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Cold drawn Aging state
Linear expansion coefficient
Table
Density
Electrical properties
Alloy resistivity is shown in the table
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Cold drawn state
Cold drawn aging state
Magnetic properties
Magnetic permeability of the alloy at time
Chemical properties
The alloy has good resistance to crevice corrosion and stress corrosion cracking. Crevice corrosion and pitting corrosion were not found in typical ferric chloride experiments. No damage occurred in the salt rub test. Alternate impregnation proved that the alloy has good resistance to hydrogen embrittlement and stress corrosion cracking.
Microstructure
Phase transition temperature
The phase with a temperature range of ~ or below in the two-phase region is metastable.
Alloy structure
The alloy is a stable face-centered cubic phase above the upper critical temperature and a stable hexagonal close-packed phase at the lower critical temperature. There is a two-phase region between the two temperatures. Metastable phases remain when the alloy is cooled from the upper critical temperature to room temperature. A phase-to-phase martensitic transformation can be induced when subjected to cold deformation at room temperature. Therefore, all the alloys are metastable phases after solution treatment. During the cold deformation process, some phases undergo martensite transformation and transform into stable phases. The generated phase is in the form of wave sheets and is distributed in a cross-network pattern within the face-centered cubic phase grains.
Forming properties
Alloy processing
Alloy steel ingots are restricted, insulated, and homogenized to reduce structural segregation and brittle phase formation. The opening temperature of alloy forging shall not be higher than the heating temperature and the time shall not be lower than the opening temperature and the final forging temperature shall not be lower. The alloy hot rolling billet opening and charging furnace temperature is not higher than the heating temperature, which is heat preservation~. The maximum deformation of the pass is not exceeded. The final rolling temperature shall not be lower than. After hot rolling, the alloy is annealed to obtain uniform grains for subsequent cold deformation processing.
Parts heat treatment process
The heat treatment process of bolts is ~ aging treatment and air cooling.
Surface treatment process
The alloy Peking Opera is insensitively heated and hot-headed into a nut, and then the surface is cold-rolled to process threads.
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