Sluggish dynamics of homogeneous flow in high-entropy metallic glasses

L. T. Zhang; Y. J. Wang; E. Pineda; H. Kato; Y. Yang; J. C. Qiao

doi:10.1016/j.scriptamat.2022.114673

Sluggish dynamics of homogeneous flow in high-entropy metallic glasses

L. T. Zhang
, Y. J. Wang
, E. Pineda
, H. Kato
, Y. Yang
, J. C. Qiao^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

33 Citations (Scopus)

Abstract

A comparative study of high-entropy metallic glasses and their reference counterparts was conducted via mechanical relaxation behavior and high-temperature deformation. We show that the high-entropy metallic glasses possess a relatively more homogeneous structure, which generates smaller activation volumes and sluggish free volume evolution during high-temperature deformation. A spectrum analysis that allows to delineate the deformation details of high-entropy metallic glasses were constructed. The core finding sheds important light on the structural heterogeneity and sluggish dynamics and provides an essential piece for understanding the deformation mechanism of high-entropy metallic glasses.

Original language	English
Article number	114673
Journal	Scripta Materialia
Volume	214
Online published	14 Mar 2022
DOIs	https://doi.org/10.1016/j.scriptamat.2022.114673
Publication status	Published - Jun 2022

Funding

This work is supported by the NSFC (Grant No. 51971178), the Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province (Grant No. 2021JC-12) and the Natural Science Foundation of Chongqing (Grant No. cstc2020jcyj-jqX0001). The investigation of L.T. Zhang is sponsored by Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University (Grant No. CX2021015). YJW was financially supported by NSFC (Grant No. 12072344) and the Youth Innovation Promotion Association of the Chinese Academy of Sciences. E. Pineda acknowledges financial support from ‘Proyecto PID2020–112975GB-I00 de investigación financiado por MCIN/AEI /10.13039/501100011033′ and Generalitat de Catalunya AGAUR grant 2017-SGR-42. The research of YY is supported by the Research Grants Council, the Hong Kong government, through the General Research Fund (GRF) with the grant numbers CityU11200719 and CityU11213118.

Research Keywords

Creep
Free volume
High-entropy metallic glass
Mechanical relaxation

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title = "Sluggish dynamics of homogeneous flow in high-entropy metallic glasses",

abstract = "A comparative study of high-entropy metallic glasses and their reference counterparts was conducted via mechanical relaxation behavior and high-temperature deformation. We show that the high-entropy metallic glasses possess a relatively more homogeneous structure, which generates smaller activation volumes and sluggish free volume evolution during high-temperature deformation. A spectrum analysis that allows to delineate the deformation details of high-entropy metallic glasses were constructed. The core finding sheds important light on the structural heterogeneity and sluggish dynamics and provides an essential piece for understanding the deformation mechanism of high-entropy metallic glasses.",

keywords = "Creep, Free volume, High-entropy metallic glass, Mechanical relaxation",

author = "Zhang, \{L. T.\} and Wang, \{Y. J.\} and E. Pineda and H. Kato and Y. Yang and Qiao, \{J. C.\}",

year = "2022",

month = jun,

doi = "10.1016/j.scriptamat.2022.114673",

language = "English",

volume = "214",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

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TY - JOUR

T1 - Sluggish dynamics of homogeneous flow in high-entropy metallic glasses

AU - Zhang, L. T.

AU - Wang, Y. J.

AU - Pineda, E.

AU - Kato, H.

AU - Yang, Y.

AU - Qiao, J. C.

PY - 2022/6

Y1 - 2022/6

N2 - A comparative study of high-entropy metallic glasses and their reference counterparts was conducted via mechanical relaxation behavior and high-temperature deformation. We show that the high-entropy metallic glasses possess a relatively more homogeneous structure, which generates smaller activation volumes and sluggish free volume evolution during high-temperature deformation. A spectrum analysis that allows to delineate the deformation details of high-entropy metallic glasses were constructed. The core finding sheds important light on the structural heterogeneity and sluggish dynamics and provides an essential piece for understanding the deformation mechanism of high-entropy metallic glasses.

AB - A comparative study of high-entropy metallic glasses and their reference counterparts was conducted via mechanical relaxation behavior and high-temperature deformation. We show that the high-entropy metallic glasses possess a relatively more homogeneous structure, which generates smaller activation volumes and sluggish free volume evolution during high-temperature deformation. A spectrum analysis that allows to delineate the deformation details of high-entropy metallic glasses were constructed. The core finding sheds important light on the structural heterogeneity and sluggish dynamics and provides an essential piece for understanding the deformation mechanism of high-entropy metallic glasses.

KW - Creep

KW - Free volume

KW - High-entropy metallic glass

KW - Mechanical relaxation

UR - https://www.scopus.com/pages/publications/85126331119

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85126331119&origin=recordpage

U2 - 10.1016/j.scriptamat.2022.114673

DO - 10.1016/j.scriptamat.2022.114673

M3 - RGC 21 - Publication in refereed journal

SN - 1359-6462

VL - 214

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 114673

ER -

Sluggish dynamics of homogeneous flow in high-entropy metallic glasses

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Research Keywords

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GRF: Development of Strong-yet-Ductile Nanograined Alloys with Intergranular Amorphous Films Based on Metallic-Glass Templates

GRF: The Development of Dual-Phase Fe-Based Metallic Glasses and Composites with Optimized Mechanical and Magnetic Properties

Cite this

Sluggish dynamics of homogeneous flow in high-entropy metallic glasses

Abstract

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

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Projects

GRF: Development of Strong-yet-Ductile Nanograined Alloys with Intergranular Amorphous Films Based on Metallic-Glass Templates

GRF: The Development of Dual-Phase Fe-Based Metallic Glasses and Composites with Optimized Mechanical and Magnetic Properties

Cite this