Relationship between the shear modulus and defect-induced structural relaxation of high-entropy metallic glasses

A. S. Makarov; E. V. Goncharova; J. C. Qiao; R. A. Konchakov; V. A. Khonik

doi:10.1016/j.ssc.2025.116008

Relationship between the shear modulus and defect-induced structural relaxation of high-entropy metallic glasses

A. S. Makarov, E. V. Goncharova, J. C. Qiao, R. A. Konchakov, V. A. Khonik

School of Mechanics,Civil Engineering and Architecture

Voronezh State Pedagogical University

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

Abstract

We performed high-precision measurements of the high-frequency (0.5 MHz) shear modulus of seven high-entropy metallic glasses (HEMGs) (mixing entropy 1.42≤ΔS_mix/R≤1.77) in the initial, relaxed and crystalline states in a wide temperature range. It is shown that the shear modulus of HEMGs is intrinsically related with the evolution of the system of defects responsible for structural relaxation. In the absence of structural relaxation, temperature coefficient of the shear modulus of glass equals to that of the counterpart crystal. All found regularities are governed by a single equation, which establishes a relationship between the shear moduli of glass and crystal.

Original language	English
Article number	116008
Journal	Solid State Communications
Volume	404
DOIs	https://doi.org/10.1016/j.ssc.2025.116008
State	Published - 1 Oct 2025

Keywords

Defects
High-entropy metallic glasses
Relaxation
Shear modulus

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10.1016/j.ssc.2025.116008

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title = "Relationship between the shear modulus and defect-induced structural relaxation of high-entropy metallic glasses",

abstract = "We performed high-precision measurements of the high-frequency (0.5 MHz) shear modulus of seven high-entropy metallic glasses (HEMGs) (mixing entropy 1.42≤ΔSmix/R≤1.77) in the initial, relaxed and crystalline states in a wide temperature range. It is shown that the shear modulus of HEMGs is intrinsically related with the evolution of the system of defects responsible for structural relaxation. In the absence of structural relaxation, temperature coefficient of the shear modulus of glass equals to that of the counterpart crystal. All found regularities are governed by a single equation, which establishes a relationship between the shear moduli of glass and crystal.",

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T1 - Relationship between the shear modulus and defect-induced structural relaxation of high-entropy metallic glasses

AU - Makarov, A. S.

AU - Goncharova, E. V.

AU - Qiao, J. C.

AU - Konchakov, R. A.

AU - Khonik, V. A.

PY - 2025/10/1

Y1 - 2025/10/1

N2 - We performed high-precision measurements of the high-frequency (0.5 MHz) shear modulus of seven high-entropy metallic glasses (HEMGs) (mixing entropy 1.42≤ΔSmix/R≤1.77) in the initial, relaxed and crystalline states in a wide temperature range. It is shown that the shear modulus of HEMGs is intrinsically related with the evolution of the system of defects responsible for structural relaxation. In the absence of structural relaxation, temperature coefficient of the shear modulus of glass equals to that of the counterpart crystal. All found regularities are governed by a single equation, which establishes a relationship between the shear moduli of glass and crystal.

AB - We performed high-precision measurements of the high-frequency (0.5 MHz) shear modulus of seven high-entropy metallic glasses (HEMGs) (mixing entropy 1.42≤ΔSmix/R≤1.77) in the initial, relaxed and crystalline states in a wide temperature range. It is shown that the shear modulus of HEMGs is intrinsically related with the evolution of the system of defects responsible for structural relaxation. In the absence of structural relaxation, temperature coefficient of the shear modulus of glass equals to that of the counterpart crystal. All found regularities are governed by a single equation, which establishes a relationship between the shear moduli of glass and crystal.

KW - Defects

KW - High-entropy metallic glasses

KW - Relaxation

KW - Shear modulus

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U2 - 10.1016/j.ssc.2025.116008

DO - 10.1016/j.ssc.2025.116008

M3 - 文章

AN - SCOPUS:105007346547

SN - 0038-1098

VL - 404

JO - Solid State Communications

JF - Solid State Communications

M1 - 116008

ER -

Relationship between the shear modulus and defect-induced structural relaxation of high-entropy metallic glasses

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