Mesostructural effects on the mechanical properties of Zr-based bulk metallic glasses

A. Caron; Q. S. Zhang; A. Minkow; V. A. Zadorozhnyy; M. Fukuhara; H. J. Fecht; D. V. Louzguine-Luzgin; A. Inoue

doi:10.1016/j.msea.2012.06.033

Mesostructural effects on the mechanical properties of Zr-based bulk metallic glasses

A. Caron, Q. S. Zhang, A. Minkow, V. A. Zadorozhnyy, M. Fukuhara, H. J. Fecht, D. V. Louzguine-Luzgin, A. Inoue

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Structural and elemental mapping analyses were applied to characterize the mesostructure in the bulk metallic glass-forming Zr ₆₀Fe _xCu _30-xAl ₁₀ and Zr _60+xFe ₅Cu _25-xAl ₁₀ alloys. It is found that the observed meso-/microstructure is adjustable by the addition of Fe and tunes the acoustic anelasticity of the samples, while the relaxation time derived from our ultrasound measurements inversely scales with the mechanical properties and ductility of the alloys. The measurements also give data for the thermal diffusivity and coefficient of thermal expansion. Together with mechanical compression tests the results are further discussed on the basis of the thermo-elastic effect and the related role of heat dissipation on the propagation of shear bands in metallic glasses during plastic deformation.

Original language	English
Pages (from-to)	57-62
Number of pages	6
Journal	Materials Science and Engineering A
Volume	555
DOIs	https://doi.org/10.1016/j.msea.2012.06.033
Publication status	Published - 2012 Oct 15

Keywords

Anelasticity
Bulk metallic glasses
Chemical heterogeneities
Mechanical properties
Mesostructure
Shear bands

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Mesostructural effects on the mechanical properties of Zr-based bulk metallic glasses",

abstract = "Structural and elemental mapping analyses were applied to characterize the mesostructure in the bulk metallic glass-forming Zr 60Fe xCu 30-xAl 10 and Zr 60+xFe 5Cu 25-xAl 10 alloys. It is found that the observed meso-/microstructure is adjustable by the addition of Fe and tunes the acoustic anelasticity of the samples, while the relaxation time derived from our ultrasound measurements inversely scales with the mechanical properties and ductility of the alloys. The measurements also give data for the thermal diffusivity and coefficient of thermal expansion. Together with mechanical compression tests the results are further discussed on the basis of the thermo-elastic effect and the related role of heat dissipation on the propagation of shear bands in metallic glasses during plastic deformation.",

keywords = "Anelasticity, Bulk metallic glasses, Chemical heterogeneities, Mechanical properties, Mesostructure, Shear bands",

author = "A. Caron and Zhang, {Q. S.} and A. Minkow and Zadorozhnyy, {V. A.} and M. Fukuhara and Fecht, {H. J.} and Louzguine-Luzgin, {D. V.} and A. Inoue",

year = "2012",

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doi = "10.1016/j.msea.2012.06.033",

language = "English",

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T1 - Mesostructural effects on the mechanical properties of Zr-based bulk metallic glasses

AU - Caron, A.

AU - Zhang, Q. S.

AU - Minkow, A.

AU - Zadorozhnyy, V. A.

AU - Fukuhara, M.

AU - Fecht, H. J.

AU - Louzguine-Luzgin, D. V.

AU - Inoue, A.

PY - 2012/10/15

Y1 - 2012/10/15

N2 - Structural and elemental mapping analyses were applied to characterize the mesostructure in the bulk metallic glass-forming Zr 60Fe xCu 30-xAl 10 and Zr 60+xFe 5Cu 25-xAl 10 alloys. It is found that the observed meso-/microstructure is adjustable by the addition of Fe and tunes the acoustic anelasticity of the samples, while the relaxation time derived from our ultrasound measurements inversely scales with the mechanical properties and ductility of the alloys. The measurements also give data for the thermal diffusivity and coefficient of thermal expansion. Together with mechanical compression tests the results are further discussed on the basis of the thermo-elastic effect and the related role of heat dissipation on the propagation of shear bands in metallic glasses during plastic deformation.

AB - Structural and elemental mapping analyses were applied to characterize the mesostructure in the bulk metallic glass-forming Zr 60Fe xCu 30-xAl 10 and Zr 60+xFe 5Cu 25-xAl 10 alloys. It is found that the observed meso-/microstructure is adjustable by the addition of Fe and tunes the acoustic anelasticity of the samples, while the relaxation time derived from our ultrasound measurements inversely scales with the mechanical properties and ductility of the alloys. The measurements also give data for the thermal diffusivity and coefficient of thermal expansion. Together with mechanical compression tests the results are further discussed on the basis of the thermo-elastic effect and the related role of heat dissipation on the propagation of shear bands in metallic glasses during plastic deformation.

KW - Anelasticity

KW - Bulk metallic glasses

KW - Chemical heterogeneities

KW - Mechanical properties

KW - Mesostructure

KW - Shear bands

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