crystallisation of amorphous alloys
(rus. кристаллизация аморфных сплавов)
—
method of creating a heterogeneous nanocrystalline structure in an amorphous alloy by special annealing that ensures crystallisation of the alloy with isolation in the amorphous matrix of crystalline grains (clusters) of different compositions, whose size is below 15 nm.
Description
Preliminary (before crystallisation by annealing) deformation of amorphous alloys by rolling or low-temperature annealing allows the grain size to be reduced to ~ 5 nm. All methods of producing amorphous alloys (metallic glasses) are based on rapid transition of the alloy components from liquid to solid state. Spinning is the most common method of metal alloy amorphisation.
Illustrations
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Generation of nanostructure in an amorphous alloy of Fe–Cu–Nb– Si–B during its crystallization. |
Author
- Gusev Alexander I.
Sources
- Gusev A. I. Nanomaterials, Nanostructures, and Nanotechnologies (in Russian) // Fizmatlit, Moscow (2007) - 416 pp.
- Gusev A. I., Rempel A. A. Nanocrystalline Materials. — Cambridge: Cambridge International Science Publishing, 2004. — 351 p.