Technical Physics
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On the possible mechanism of external infrasonic mechanical stimulating the process of formation of nanocrystals in an amorphous metal film
Slyadnikov E.E.1,2,3, Turchanovsky I.Y.2
1Institute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of Sciences, Tomsk, Russia
2Federal Research Center for Information and Computational Technologies, Novosibirsk, Russia
3Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
2Federal Research Center for Information and Computational Technologies, Novosibirsk, Russia
3Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Email: eeslyadnikov@gmail.com
A kinetic model, a physical reason and a condition for stimulated by external infrasonic mechanical vibrations of the formation of nanocrystals in an amorphous metal film. The nanostructural elements of the amorphous medium are responsible for these processes: locally ordered nanoclusters and nanoregions containing free volume, which contain two-level systems. When glass is deformed, two-level systems are excited, due to which they make a significant contribution to inelastic deformation, structural relaxation, formation of nanoclusters and nanocrystals. The physical mechanism of nanocrystallization of metallic glass during mechanical exposure includes, in addition to the mechanism of local thermal fluctuations, also athermal mechanism of quantum tunneling of atoms or atomic groups stimulated by inelastic deformation. Keywords: Kinetic model, amorphous metal film, nanocrystals, infrasonic mechanical vibrations.
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