Are superalloys magnetic, and are high temperature steels magnetic

The magnetism of superalloys depends on the specific material, and precipitation hardening superalloys are magnetic.

Main grades of superalloys:

Solution-strengthened iron-based alloys:

gh1015、gh1035、gh1040、gh1131、gh1140

Age-hardening iron-based alloys:

gh2018、gh2036、gh2038、gh2130、gh2132、gh2135、gh2136、gh2302、gh2696

Solution-strengthened nickel-based alloys:

gh3030、gh3039、gh3044、gh3028、gh3128、gh3536、gh605,gh600

Age-hardening nickel-based alloys:

gh4033、gh4037、gh4043、gh4049、gh4133、gh4133b、gh4169、gh4145、gh4090

Foreign superalloys are called inconel series, incoloy series, and hastelloy series.

Composition and performance.

Nickel-based alloys are the most widely used and high-temperature strength alloys in superalloys. The main reasons are: first, more alloying elements can be dissolved in nickel-based alloys, and good microstructure stability can be maintained; Second, it can form co-ordered A3B intermetallic compounds'The [Ni3(Al,Ti)] phase is used as the strengthening phase, so that the alloy can be effectively strengthened, and the high-temperature strength is higher than that of iron-based superalloys and cobalt-based superalloys. Third, nickel-based alloys containing chromium have better resistance to yangization and gas corrosion than iron-based superalloys. Nickel-based alloys contain more than 10 elements, of which CR mainly plays an anti-yangization and anti-corrosion role, and other elements mainly play a strengthening role.

According to their strengthening mode of action, they can be divided into: solid solution strengthening elements, such as tungsten, molybdenum, cobalt, chromium and vanadium; precipitation-strengthening elements such as aluminum, titanium, niobium, and tantalum; Grain boundary strengthening elements such as boron, zirconium, magnesium and rare earth elements.

Wait. Nickel-base superalloys.

According to the strengthening method, there are solid solution strengthened alloys and precipitation strengthened alloys.

Solution-strengthened alloys.

It has a certain high temperature strength, good resistance to yang, hot corrosion, cold and thermal fatigue resistance, and good plasticity and weldability, etc., which can be used to manufacture high working temperature and low stress (per square millimeter.

several kgf) components, such as gas turbines.

of the combustion chamber. Precipitation-strengthened alloys.

Usually the three strengthening methods of solution strengthening, precipitation strengthening and grain boundary strengthening are comprehensively adopted, so it has good high temperature creep strength, pi labor resistance, yang resistance and hot corrosion resistance, and can be used to make parts that bear high stress at high temperature (more than ten kilograms per square millimeter, such as turbine blades of gas turbines, etc.).

Superalloys are generally magnetic, some are micromagnetic, and are non-magnetic after a special process.

No, high temperatures can destroy the magnetic field! When a magnet is heated to a certain temperature, it will suddenly lose its magnetism, which is caused by the arrangement of the many "meta-magnets" that make up the magnet from ordered to disordered; When a magnet that loses its magnetism is placed into a magnetic field, when the magnetization reaches a certain value, it is magnetized again, and the arrangement of the "meta-magnets" changes from disordered to ordered.

As the temperature of magnets and magnets increases, the thermal movement of molecules inside them becomes faster and faster. As a result, more and more electrons refused to listen"Queue up"of"Password"Finish. When the temperature rises to a certain value, the violent molecular thermal motion finally completely destroys the regularity of the direction of the electron motion, and the magnetism of the magnet disappears.

Metallurgists refer to the temperature at which magnets and magnets completely lose their magnetism"Curie temperature"。

202,304 stainless steel plates are non-magnetic before processing, but even 304 material rust steel will be magnetic after processing (stretching). High-temperature annealing and demagnetization is carried out, and after such treatment, it is indeed no longer magnetic, but after annealing, the rigidity becomes weaker and the hardness becomes worse. Carbon steel, ferritic and martensitic stainless steels are magnetic, austenitic stainless steel is non-magnetic, but it will be magnetic when it is formed into a stenite phase transition by cold work hardening, and this martensitic structure can be eliminated and its non-magnetic property can be restored by hot talk stool treatment.