Thermal effects and evolution of the defect concentration based on shear modulus relaxation data in a Zr-based metallic glass

Qi Hao; Ji Chao Qiao; E. V. Goncharova; G. V. Afonin; Min Na Liu; Yi Ting Cheng; V. A. Khonik

doi:10.1088/1674-1056/ab969c

Thermal effects and evolution of the defect concentration based on shear modulus relaxation data in a Zr-based metallic glass

Qi Hao, Ji Chao Qiao, E. V. Goncharova, G. V. Afonin, Min Na Liu, Yi Ting Cheng, V. A. Khonik

School of Mechanics,Civil Engineering and Architecture

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

18 Scopus citations

Abstract

A relationship between thermal effects and relaxation of the high-frequency shear modulus upon heat treatment of bulk Zr48(Cu5/6Ag1/6)44Al8 metallic glass is found. This relationship is attributed to the relaxation of a interstitial-type defect system frozen-in from the melt upon glass production. Calorimetric data show that thermal effects occurring on heating include heat release below the glass transition temperature, heat absorption above it and heat release caused by crystallization. The equation derived within the Interstitialcy theory can be used to calculate the shear modulus relaxation using the calorimetric data. The obtained results are used to trace the defect concentration as functions of temperature and thermal prehistory.

Original language	English
Article number	086402
Journal	Chinese Physics B
Volume	29
Issue number	8
DOIs	https://doi.org/10.1088/1674-1056/ab969c
State	Published - Jul 2020

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title = "Thermal effects and evolution of the defect concentration based on shear modulus relaxation data in a Zr-based metallic glass",

abstract = "A relationship between thermal effects and relaxation of the high-frequency shear modulus upon heat treatment of bulk Zr48(Cu5/6Ag1/6)44Al8 metallic glass is found. This relationship is attributed to the relaxation of a interstitial-type defect system frozen-in from the melt upon glass production. Calorimetric data show that thermal effects occurring on heating include heat release below the glass transition temperature, heat absorption above it and heat release caused by crystallization. The equation derived within the Interstitialcy theory can be used to calculate the shear modulus relaxation using the calorimetric data. The obtained results are used to trace the defect concentration as functions of temperature and thermal prehistory.",

author = "Qi Hao and Qiao, {Ji Chao} and Goncharova, {E. V.} and Afonin, {G. V.} and Liu, {Min Na} and Cheng, {Yi Ting} and Khonik, {V. A.}",

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T1 - Thermal effects and evolution of the defect concentration based on shear modulus relaxation data in a Zr-based metallic glass

AU - Hao, Qi

AU - Qiao, Ji Chao

AU - Goncharova, E. V.

AU - Afonin, G. V.

AU - Liu, Min Na

AU - Cheng, Yi Ting

AU - Khonik, V. A.

PY - 2020/7

Y1 - 2020/7

N2 - A relationship between thermal effects and relaxation of the high-frequency shear modulus upon heat treatment of bulk Zr48(Cu5/6Ag1/6)44Al8 metallic glass is found. This relationship is attributed to the relaxation of a interstitial-type defect system frozen-in from the melt upon glass production. Calorimetric data show that thermal effects occurring on heating include heat release below the glass transition temperature, heat absorption above it and heat release caused by crystallization. The equation derived within the Interstitialcy theory can be used to calculate the shear modulus relaxation using the calorimetric data. The obtained results are used to trace the defect concentration as functions of temperature and thermal prehistory.

AB - A relationship between thermal effects and relaxation of the high-frequency shear modulus upon heat treatment of bulk Zr48(Cu5/6Ag1/6)44Al8 metallic glass is found. This relationship is attributed to the relaxation of a interstitial-type defect system frozen-in from the melt upon glass production. Calorimetric data show that thermal effects occurring on heating include heat release below the glass transition temperature, heat absorption above it and heat release caused by crystallization. The equation derived within the Interstitialcy theory can be used to calculate the shear modulus relaxation using the calorimetric data. The obtained results are used to trace the defect concentration as functions of temperature and thermal prehistory.

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DO - 10.1088/1674-1056/ab969c

M3 - 文章

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SN - 1674-1056

VL - 29

JO - Chinese Physics B

JF - Chinese Physics B

IS - 8

M1 - 086402

ER -

Thermal effects and evolution of the defect concentration based on shear modulus relaxation data in a Zr-based metallic glass

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