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Proceedings Paper

Atomic mechanism of the amorphization process in transition metal-metalloid and metal-metal alloys
Author(s): Rafael R. Nourgayanov; Vladimir G. Chudinov
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Paper 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.

Paper Details

Date Published: 1 January 1998
PDF: 8 pages
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); doi: 10.1117/12.299602
Show Author Affiliations
Rafael R. Nourgayanov, Physical and Technical Institute (Russia)
Vladimir G. Chudinov, Physical and Technical Institute (Russia)


Published in SPIE Proceedings Vol. 3345:
International Workshop on New Approaches to High-Tech Materials: Nondestructive Testing and Computer Simulations in Materials Science and Engineering
Alexander I. Melker, Editor(s)

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