Unified perspective on structural heterogeneity of a LaCe-based metallic glass from versatile dynamic stimuli

Z. R. Xu; D. S. Yang; J. C. Qiao; J. M. Pelletier; D. Crespo; E. Pineda; Yun Jiang Wang

doi:10.1016/j.intermet.2020.106922

Unified perspective on structural heterogeneity of a LaCe-based metallic glass from versatile dynamic stimuli

Z. R. Xu
, D. S. Yang
, J. C. Qiao
, J. M. Pelletier
, D. Crespo
, E. Pineda
, Yun Jiang Wang

School of Mechanics,Civil Engineering and Architecture

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

15 Scopus citations

Abstract

Dynamic mechanical relaxation, stress relaxation and creep were performed in a La_56.16Ce_14.04Ni_19.8Al₁₀ metallic glass with pronounced β relaxation features. The evolution of the microstructural heterogeneity with temperature is indirectly revealed via dynamic heterogeneity and analyzed in terms of several independent theoretical approaches. An apparent activation energy of β relaxation is obtained by assuming the Arrhenius relationship, which is calibrated by either the activation enthalpy of stress relaxation or the activation energy of creep. It is found that similar deformation mechanisms accommodate the dynamics of the LaCe-based metallic glass under different types of external stimuli applied in mechanical experiments.

Original language	English
Article number	106922
Journal	Intermetallics
Volume	125
DOIs	https://doi.org/10.1016/j.intermet.2020.106922
State	Published - Oct 2020

Keywords

Creep
Dynamic mechanical relaxation
Metallic glass
Stress relaxation
Structural heterogeneity

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10.1016/j.intermet.2020.106922

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title = "Unified perspective on structural heterogeneity of a LaCe-based metallic glass from versatile dynamic stimuli",

abstract = "Dynamic mechanical relaxation, stress relaxation and creep were performed in a La56.16Ce14.04Ni19.8Al10 metallic glass with pronounced β relaxation features. The evolution of the microstructural heterogeneity with temperature is indirectly revealed via dynamic heterogeneity and analyzed in terms of several independent theoretical approaches. An apparent activation energy of β relaxation is obtained by assuming the Arrhenius relationship, which is calibrated by either the activation enthalpy of stress relaxation or the activation energy of creep. It is found that similar deformation mechanisms accommodate the dynamics of the LaCe-based metallic glass under different types of external stimuli applied in mechanical experiments.",

keywords = "Creep, Dynamic mechanical relaxation, Metallic glass, Stress relaxation, Structural heterogeneity",

author = "Xu, \{Z. R.\} and Yang, \{D. S.\} and Qiao, \{J. C.\} and Pelletier, \{J. M.\} and D. Crespo and E. Pineda and Wang, \{Yun Jiang\}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = oct,

doi = "10.1016/j.intermet.2020.106922",

language = "英语",

volume = "125",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Unified perspective on structural heterogeneity of a LaCe-based metallic glass from versatile dynamic stimuli

AU - Xu, Z. R.

AU - Yang, D. S.

AU - Qiao, J. C.

AU - Pelletier, J. M.

AU - Crespo, D.

AU - Pineda, E.

AU - Wang, Yun Jiang

PY - 2020/10

Y1 - 2020/10

N2 - Dynamic mechanical relaxation, stress relaxation and creep were performed in a La56.16Ce14.04Ni19.8Al10 metallic glass with pronounced β relaxation features. The evolution of the microstructural heterogeneity with temperature is indirectly revealed via dynamic heterogeneity and analyzed in terms of several independent theoretical approaches. An apparent activation energy of β relaxation is obtained by assuming the Arrhenius relationship, which is calibrated by either the activation enthalpy of stress relaxation or the activation energy of creep. It is found that similar deformation mechanisms accommodate the dynamics of the LaCe-based metallic glass under different types of external stimuli applied in mechanical experiments.

AB - Dynamic mechanical relaxation, stress relaxation and creep were performed in a La56.16Ce14.04Ni19.8Al10 metallic glass with pronounced β relaxation features. The evolution of the microstructural heterogeneity with temperature is indirectly revealed via dynamic heterogeneity and analyzed in terms of several independent theoretical approaches. An apparent activation energy of β relaxation is obtained by assuming the Arrhenius relationship, which is calibrated by either the activation enthalpy of stress relaxation or the activation energy of creep. It is found that similar deformation mechanisms accommodate the dynamics of the LaCe-based metallic glass under different types of external stimuli applied in mechanical experiments.

KW - Creep

KW - Dynamic mechanical relaxation

KW - Metallic glass

KW - Stress relaxation

KW - Structural heterogeneity

UR - https://www.scopus.com/pages/publications/85089211422

U2 - 10.1016/j.intermet.2020.106922

DO - 10.1016/j.intermet.2020.106922

M3 - 文章

AN - SCOPUS:85089211422

SN - 0966-9795

VL - 125

JO - Intermetallics

JF - Intermetallics

M1 - 106922

ER -

Unified perspective on structural heterogeneity of a LaCe-based metallic glass from versatile dynamic stimuli

Abstract

Keywords

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