Atomic mechanism of the amorphization process in transition metal-metalloid and metal-metal alloys

Rafael R. Nourgayanov; Vladimir G. Chudinov

doi:10.1117/12.299602

1 January 1998 Atomic mechanism of the amorphization process in transition metal-metalloid and metal-metal alloys

Rafael R. Nourgayanov, Vladimir G. Chudinov

Proceedings Volume 3345, International Workshop on New Approaches to High-Tech Materials: Nondestructive Testing and Computer Simulations in Materials Science and Engineering; (1998) https://doi.org/10.1117/12.299602
Event: International Workshop on New Approaches to High Tech Materials: Nondestructive Testing and Computer Simulations in Materials Science and Engineering, 1997, St. Petersburg, Russian Federation

Abstract

By means of the molecular dynamics method using pair interaction potentials calculated within the framework of the pseudo-potential theory the rapid quenching process is simulated. The short-range order and atomic structure of Ni₈₀B₂₀, Ni₈₀Zr₂₀ and Zr₈₀Be₂₀ alloys in amorphous state are investigated. Total and partial radial atomic distribution functions, nearest interatomic distances and coordination numbers are determined. It is found that amorphization both in transition metal-metalloid and in metal-metal alloys occurs according to the unified formation mechanism of low-dimensional nanometric dendritelike aggregates. For each type of atoms the velocity distributions and spectra of vibrational states are received. The non-standard behavior of amorphous alloys is supposed to be connected with disturbing thermodynamic canonicity states, caused by the presence of nanocrystal heterogeneities of composition.

Citation Download Citation

Rafael R. Nourgayanov and Vladimir G. Chudinov "Atomic mechanism of the amorphization process in transition metal-metalloid and metal-metal alloys", Proc. SPIE 3345, International Workshop on New Approaches to High-Tech Materials: Nondestructive Testing and Computer Simulations in Materials Science and Engineering, (1 January 1998); https://doi.org/10.1117/12.299602

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KEYWORDS

Chemical species

Transition metals

Crystals

Metals

Nickel

X-rays

Diffraction

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