Udimet630 Nickel-Based Alloy
Brand: Udimet630
Carbon C: 0.04
Silicon Si: -
Manganese Mn: -
Chromium Cr: 17.0
Nickel Ni: 50.0
Molybdenum Mo: 3.0
Cobalt Co: -
Tungsten W: 3.0
Aluminum Al: 0.7
Niobium Nb: 6.5
Titanium Ti: 1.0
Iron Fe: 18
Others (%): B: 0.004
Udimet630 superalloy refers to a kind of metal material based on iron, nickel and cobalt, which can work for a long time at high temperature above 600ºC and under certain stress; and has high high temperature strength, good anti-oxidation and anti-corrosion properties , good fatigue properties, fracture toughness and other comprehensive properties.
The superalloy is a single austenite structure, which has good structure stability and reliability at various temperatures. Rongpin Technology provides products based on the above performance characteristics, and the alloying degree of the superalloy is high, and it is also Known as "super alloy", it is an important material widely used in aviation, aerospace, petroleum, chemical industry and ships.
According to the matrix elements, superalloys are divided into iron-based, nickel-based, cobalt-based and other superalloys. The operating temperature of iron-based superalloys can generally only reach 750~780 °C. For heat-resistant parts used at higher temperatures, nickel-based and refractory metal-based alloys are used.
Nickel-based superalloys occupy a special and important position in the entire field of superalloys, and are widely used in the manufacture of aerospace jet engines and hot-end components of various industrial gas turbines.
If the lasting strength of 150MPA-100H is used as the standard, the high temperature that the nickel alloy can withstand is >1100ºC, while the nickel alloy is about 950ºC, and the iron-based alloy is <850ºC, that is, the nickel-based alloy is correspondingly higher than 150ºC to about 250°C. So people call the nickel alloy the heart of the engine.
At present, in advanced engines, nickel alloys have accounted for half of the total weight, not only turbine blades and combustion chambers, but also turbine disks and even later stages of compressor blades have begun to use nickel alloys.
Compared with iron alloys, the advantages of nickel alloys are: higher working temperature, stable structure, less harmful phases, and greater ability to engage in oxidation and corrosion.
Compared with cobalt alloys, nickel alloys can work at higher temperatures and stresses, especially in rotor blades.
Nickel alloys have the above advantages related to some of their own properties.
Nickel is a face-centered cube with a very high structure. Key equipment for superalloy production The vacuum furnace is stable and does not undergo allotropic transformation from room temperature to high temperature; this is very important for the selection of matrix materials.
It is well known that austenite structure has a series of advantages over ferrite structure.
Nickel has high chemical stability, almost no oxidation occurs below 500 degrees, and it is not affected by warm air, water and some salt solutions at school temperature. Nickel dissolves very slowly in sulfuric acid and hydrochloric acid, but dissolves very quickly in nitric acid.
Nickel has great alloying ability, and even adding more than ten kinds of alloying elements does not appear harmful phase, which provides potential possibilities for improving various properties of nickel.
Although the mechanical properties of pure nickel are not strong, the plasticity is excellent, especially the plasticity changes little at low temperature.
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