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Characteristics of bulk amorphous alloy

Views: 12472020-12-11  

With the improvement of preparation technology and the continuous development of alloys with greater amorphous forming ability, it has become a reality to obtain bulk amorphous alloys with thicknesses of several millimeters or more, regular shapes and good repeatability, making amorphous alloys comparable to those commonly used . The same crystalline alloy is made into samples that meet the corresponding test specifications, and performance tests and comparisons are performed under the same conditions. This progress clearly shows the unique properties and broad application prospects of bulk amorphous alloy.

Compared with bulk crystalline alloys, bulk amorphous alloys have many excellent properties, such as high hardness, high strength, high corrosion resistance, superplasticity, and better soft magnetic properties.Bulk amorphous alloy has the structural characteristics of short-range order and long-range disorder. Compared with the corresponding crystalline alloy, it has no crystal defects such as grain boundaries and dislocations, so it has high strength, elastic deformation ability and relative Lower Young's modulus.Since bulk amorphous alloy has no crystal defects such as grain boundaries, dislocations, and no component segregation and second phase precipitation, the uniformity of the structure and distribution makes it have good corrosion resistance. In addition, the bulk amorphous alloy itself has high activity, and it is relatively easy to form a dense and uniform isolation layer on the surface, so that the substrate cannot contact the outside world.

Amorphous metals and bulk metallic

The ferromagnetic bulk amorphous alloy has a uniform structure, no grain boundaries and magnetocrystalline anisotropy, and usually there are no precipitated phases and impurities that pin the movement of the magnetic domain wall, and the resistivity is high, so it has excellent soft magnetic properties. Although the addition of a large amount of solute elements has a certain effect on the magnetization of ferromagnetic bulk amorphous alloy, its high magnetic permeability and low coercivity, magnetic loss and magnetostriction, especially its high-frequency magnetic properties are No other soft magnetic material.

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