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Delayed elasticity of metallic glasses: Loading time and temperature dependences of the anelastic relaxation

Nabahat, Mehran and Amini, Narges and Pineda, E. and Yang, Fan and Qiao, Jichao and ruta, B. and Crespo, Daniel (2022) Delayed elasticity of metallic glasses: Loading time and temperature dependences of the anelastic relaxation. Physical Review Materials, 6, p. 125601. American Physical Society. doi: 10.1103/PhysRevMaterials.6.125601. ISSN 2475-9953.

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Official URL: https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.6.125601

Abstract

One of the hallmarks of disordered matter is the large amplitude of the anelastic deformation, i.e., the fraction of reversible deformation that is not instantaneously recovered after the release of load but is delayed in time. In this paper, this delayed elasticity is studied for the glass-forming Zr46.25Ti8.25Cu7.5Ni10Be27.5 alloy by means of stress step and recovery experiments. Even at high temperatures, not far from the glass transition, the delayed elasticity can recover an important fraction of the deformation and endure for a long time. Analyzing the effects of loading time and waiting time on the strain evolution, we reveal the presence of an anelastic response with a timescale dependent on loading time and an invariant shape, which indicates the presence of a distribution of reversible relaxation modes following a τ−n law with exponent n between 0.5 and 1. The underlying distribution of energy barriers activated at different temperatures is accordingly shape invariant. Moreover, we found that a distribution of reversible modes corresponding to the high-frequency side of the α−relaxation peak can reproduce the experimental results. The results establish a direct link between the dynamical spectrum and the distribution of activation energies, revealing the origin of the transient creep and anelastic recovery behaviors of metallic glasses.

Item URL in elib:https://elib.dlr.de/194078/
Document Type:Article
Title:Delayed elasticity of metallic glasses: Loading time and temperature dependences of the anelastic relaxation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Nabahat, MehranDepartment of Physics, Universitat Politècnica de Catalunya - BarcelonaTech, 08019 Barcelona, SpainUNSPECIFIEDUNSPECIFIED
Amini, NargesDepartment of Chemistry, Aarhus University, Aarhus, DenmarkUNSPECIFIEDUNSPECIFIED
Pineda, E.Department of Physics, Universitat Politècnica de Catalunya - BarcelonaTech, 08019 Barcelona, SpainUNSPECIFIEDUNSPECIFIED
Yang, FanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Qiao, JichaoSchool of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an ChinaUNSPECIFIEDUNSPECIFIED
ruta, B.Institut Lumière Matière, UMR5306, Université Lyon1-CNRS, Université de Lyon, Lyon 69622, Villeurbanne Cedex, FranceUNSPECIFIEDUNSPECIFIED
Crespo, DanielDepartment of Physics, Universitat Politècnica de Catalunya - BarcelonaTech, 08019 Barcelona, SpainUNSPECIFIEDUNSPECIFIED
Date:9 December 2022
Journal or Publication Title:Physical Review Materials
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:6
DOI:10.1103/PhysRevMaterials.6.125601
Page Range:p. 125601
Publisher:American Physical Society
ISSN:2475-9953
Status:Published
Keywords:Anelastic deformation, Creep, Mechanical deformation, Metallic glasses, Supercooled liquid, Materials modeling, Tension tests
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Material Design and New Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Yang, Fan
Deposited On:28 Feb 2023 06:54
Last Modified:08 Jan 2024 13:35

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