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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Mechanical spectroscopy study on the Cu54Zr40Al6 amorphous matrix alloy at low temperature

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Marques, P. W. B. [1] ; Chaves, J. M. [1] ; Silva, Jr., P. S. [1] ; Florencio, O. [1] ; Moreno-Gobbi, A. [2] ; Aliaga, L. C. R. [3] ; Botta, W. J. [3]
Total Authors: 7
[1] Univ Fed Sao Carlos, Dept Fis, BR-676 Sao Carlos, SP - Brazil
[2] Fac Ciencias UDELAR, Inst Fis, Montevideo 11400 - Uruguay
[3] Univ Fed Sao Carlos, Dept Mat Engn, BR-676 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Alloys and Compounds; v. 621, p. 319-323, FEB 5 2015.
Web of Science Citations: 5

A mechanical spectroscopy study of Cu54Zr40Al6 bulk metallic glasses composites was carried out in the kHz and MHz frequency ranges, by means of flexural and ultrasonic methods, respectively, in the temperature interval 150-300 K. In internal friction and attenuation curves at low temperature were observed peaks which were associated with distortions in the configuration of atomic clusters, which absorbed different quantities of energy due to short and medium order rearrangements. Changes within the clusters or atomic jumps between clusters occurring in the specimen induced the onset of polyamorphic peaks, since electronic interactions and bonding changed abruptly. (C) 2014 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/13378-1 - Anelastic Relaxation Process Associated to Atomic Migration and Structural Rearrangement in Metallic Alloys with High Glass Forming Ability (Glassy and Nanocrystalline Alloys)
Grantee:Paulo Wilmar Barbosa Marques
Support type: Scholarships in Brazil - Post-Doctorate