skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Change in the structure of amorphous alloys under high pressure

Abstract

The influence of high pressure on the structure of amorphous alloys based on aluminum, iron, and cobalt is studied by X-ray diffraction, scanning, and transmission electron microscopy. It is found that the exposure of the alloys to a pressure of 5–8 GPa at room temperature leads to various changes in amorphous structures in the dependence on the alloy compositions: separation of initially homogeneous amorphous phase and the formation of a nanoglass, formation of nanocrystals, or does not cause any marked changes in the structure. It is shown that the differences in the deformed structures of the amorphous phase of aluminum- based alloys and alloys based on iron and cobalt are due to different values of the elastic constants of these groups of alloys and different temperature crystallization of the amorphous phase. It is shown that the value and the time of the pressure influence are important factors that determine the change in the amorphous structure and the formation of nanocrystals.

Authors:
;  [1]
  1. Russian Academy of Sciences, Institute of Solid State Physics (Russian Federation)
Publication Date:
OSTI Identifier:
22771527
Resource Type:
Journal Article
Journal Name:
Physics of the Solid State
Additional Journal Information:
Journal Volume: 59; Journal Issue: 11; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7834
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALLOYS; ALUMINIUM ALLOYS; AMORPHOUS STATE; COBALT ALLOYS; IRON ALLOYS; NANOSTRUCTURES; PHASE TRANSFORMATIONS; PRESSURE RANGE GIGA PA; SCANNING ELECTRON MICROSCOPY; TEMPERATURE RANGE 0273-0400 K; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Abrosimova, G. E., E-mail: gea@issp.ac.ru, and Aronin, A. S.. Change in the structure of amorphous alloys under high pressure. United States: N. p., 2017. Web. doi:10.1134/S1063783417110026.
Abrosimova, G. E., E-mail: gea@issp.ac.ru, & Aronin, A. S.. Change in the structure of amorphous alloys under high pressure. United States. doi:10.1134/S1063783417110026.
Abrosimova, G. E., E-mail: gea@issp.ac.ru, and Aronin, A. S.. Wed . "Change in the structure of amorphous alloys under high pressure". United States. doi:10.1134/S1063783417110026.
@article{osti_22771527,
title = {Change in the structure of amorphous alloys under high pressure},
author = {Abrosimova, G. E., E-mail: gea@issp.ac.ru and Aronin, A. S.},
abstractNote = {The influence of high pressure on the structure of amorphous alloys based on aluminum, iron, and cobalt is studied by X-ray diffraction, scanning, and transmission electron microscopy. It is found that the exposure of the alloys to a pressure of 5–8 GPa at room temperature leads to various changes in amorphous structures in the dependence on the alloy compositions: separation of initially homogeneous amorphous phase and the formation of a nanoglass, formation of nanocrystals, or does not cause any marked changes in the structure. It is shown that the differences in the deformed structures of the amorphous phase of aluminum- based alloys and alloys based on iron and cobalt are due to different values of the elastic constants of these groups of alloys and different temperature crystallization of the amorphous phase. It is shown that the value and the time of the pressure influence are important factors that determine the change in the amorphous structure and the formation of nanocrystals.},
doi = {10.1134/S1063783417110026},
journal = {Physics of the Solid State},
issn = {1063-7834},
number = 11,
volume = 59,
place = {United States},
year = {2017},
month = {11}
}