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Intrinsic relaxation in a supercooled ZrTiNiCuBe glass forming liquid

amini, N. and Yang, Fan and Pineda, E. and ruta, B. and Sprung, M. and Meyer, A. (2021) Intrinsic relaxation in a supercooled ZrTiNiCuBe glass forming liquid. Physical Review Materials, 5 (055601), 055601. American Physical Society. doi: 10.1103/PhysRevMaterials.5.055601. ISSN 2475-9953.

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Official URL: https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.5.055601


We studied structural relaxation in the bulk metallic glass forming alloy Zr46.8Ti8.2Cu7.5Ni10Be27.5 on different timescales and length scales, with emphasis on the supercooled liquid state. Using x-ray photon correlation spectroscopy, we determined the microscopic structural relaxation time covering timescales of more than two decades in the supercooled liquid region, down to the subsecond regime. Upon heating across the glass transition, the intermediate scattering function changes from a compressed to a stretched decay, with a smooth transition in the stretching exponent and characteristic relaxation time. In the supercooled liquid state, the macroscopic and microscopic relaxation time and the melt viscosity all exhibit the same temperature dependence. This points to a relaxation mechanism via intrinsic structural relaxation of the majority component Zr, with its microscopic timescale controlling both the stress relaxation and viscous flow of the melt.

Item URL in elib:https://elib.dlr.de/144396/
Document Type:Article
Title:Intrinsic relaxation in a supercooled ZrTiNiCuBe glass forming liquid
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
amini, N.Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR)UNSPECIFIEDUNSPECIFIED
Pineda, E.Department of Physics, Universitat Politècnica de Catalunya - BarcelonaTech, 08019 Barcelona, SpainUNSPECIFIEDUNSPECIFIED
ruta, B.Institut Lumière Matière, UMR5306, Université Lyon1-CNRS, Université de Lyon, Lyon 69622, Villeurbanne Cedex, FranceUNSPECIFIEDUNSPECIFIED
Sprung, M.Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, Hamburg 22607, GermanyUNSPECIFIEDUNSPECIFIED
Meyer, A.Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, GermanyUNSPECIFIEDUNSPECIFIED
Date:14 May 2021
Journal or Publication Title:Physical Review Materials
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:055601
Publisher:American Physical Society
Keywords:Glass transition, Stress, Metallic glasses, hermomechanical analysis, X-ray photon correlation spectroscopy
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 - Materials Research and Microgravity (MuM)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space > Scientific Experiments MP
Deposited By: Yang, Fan
Deposited On:11 Oct 2021 08:52
Last Modified:11 Oct 2021 08:52

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