Dynamic mechanical relaxation in LaCe-based metallic glasses: Influence of the chemical composition

Minna Liu; Jichao Qiao; Qi Hao; Yinghong Chen; Yao Yao; Daniel Crespo; Jean Marc Pelletier

doi:10.3390/met9091013

Dynamic mechanical relaxation in LaCe-based metallic glasses: Influence of the chemical composition

Minna Liu, Jichao Qiao, Qi Hao, Yinghong Chen, Yao Yao, Daniel Crespo, Jean Marc Pelletier

School of Mechanics,Civil Engineering and Architecture

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

8 Scopus citations

Abstract

The mechanical relaxation behavior of the (La_0.5Ce_0.5)₆₅Al₁₀(Co_xCu_1-x)25 at% (x = 0, 0.2, 0.4, 0.6, and 0.8) metallic glasses was probed by dynamic mechanical analysis. The intensity of the secondary β relaxation increases along with the Co/Cu ratio, as has been reported in metallic glasses where the enthalpy of mixing for all pairs of atoms is negative. Furthermore, the intensity of the secondary β relaxation decreases after physical aging below the glass transition temperature, which is probably due to the reduction of the atomic mobility induced by physical aging.

Original language	English
Article number	1013
Journal	Metals
Volume	9
Issue number	9
DOIs	https://doi.org/10.3390/met9091013
State	Published - 2019

Keywords

Kohlrausch-williams-watts equation
Mechanical spectroscopy
Metallic glasses
Mixing enthalpy
Structural heterogeneity

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title = "Dynamic mechanical relaxation in LaCe-based metallic glasses: Influence of the chemical composition",

abstract = "The mechanical relaxation behavior of the (La0.5Ce0.5)65Al10(CoxCu1-x)25 at% (x = 0, 0.2, 0.4, 0.6, and 0.8) metallic glasses was probed by dynamic mechanical analysis. The intensity of the secondary β relaxation increases along with the Co/Cu ratio, as has been reported in metallic glasses where the enthalpy of mixing for all pairs of atoms is negative. Furthermore, the intensity of the secondary β relaxation decreases after physical aging below the glass transition temperature, which is probably due to the reduction of the atomic mobility induced by physical aging.",

keywords = "Kohlrausch-williams-watts equation, Mechanical spectroscopy, Metallic glasses, Mixing enthalpy, Structural heterogeneity",

author = "Minna Liu and Jichao Qiao and Qi Hao and Yinghong Chen and Yao Yao and Daniel Crespo and Pelletier, {Jean Marc}",

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doi = "10.3390/met9091013",

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journal = "Metals",

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TY - JOUR

T1 - Dynamic mechanical relaxation in LaCe-based metallic glasses

T2 - Influence of the chemical composition

AU - Liu, Minna

AU - Qiao, Jichao

AU - Hao, Qi

AU - Chen, Yinghong

AU - Yao, Yao

AU - Crespo, Daniel

AU - Pelletier, Jean Marc

PY - 2019

Y1 - 2019

N2 - The mechanical relaxation behavior of the (La0.5Ce0.5)65Al10(CoxCu1-x)25 at% (x = 0, 0.2, 0.4, 0.6, and 0.8) metallic glasses was probed by dynamic mechanical analysis. The intensity of the secondary β relaxation increases along with the Co/Cu ratio, as has been reported in metallic glasses where the enthalpy of mixing for all pairs of atoms is negative. Furthermore, the intensity of the secondary β relaxation decreases after physical aging below the glass transition temperature, which is probably due to the reduction of the atomic mobility induced by physical aging.

AB - The mechanical relaxation behavior of the (La0.5Ce0.5)65Al10(CoxCu1-x)25 at% (x = 0, 0.2, 0.4, 0.6, and 0.8) metallic glasses was probed by dynamic mechanical analysis. The intensity of the secondary β relaxation increases along with the Co/Cu ratio, as has been reported in metallic glasses where the enthalpy of mixing for all pairs of atoms is negative. Furthermore, the intensity of the secondary β relaxation decreases after physical aging below the glass transition temperature, which is probably due to the reduction of the atomic mobility induced by physical aging.

KW - Kohlrausch-williams-watts equation

KW - Mechanical spectroscopy

KW - Metallic glasses

KW - Mixing enthalpy

KW - Structural heterogeneity

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U2 - 10.3390/met9091013

DO - 10.3390/met9091013

M3 - 文章

AN - SCOPUS:85073283721

SN - 2075-4701

VL - 9

JO - Metals

JF - Metals

IS - 9

M1 - 1013

ER -

Dynamic mechanical relaxation in LaCe-based metallic glasses: Influence of the chemical composition

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Keywords

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