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Unexpected behavior of the crystal growth velocity at the hypercooling limit

Fopp, Patrick and Kolbe, Matthias and Kargl, Florian and Kobold, Raphael and Hornfeck, Wolfgang (2020) Unexpected behavior of the crystal growth velocity at the hypercooling limit. Physical Review Materials, 4, 073405-1. American Physical Society. doi: 10.1103/PhysRevMaterials4073405. ISSN 2475-9953.

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Official URL: https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.4.073405

Abstract

We applied the electrostatic levitation technique in order to study the crystal growth velocity v as a function of the undercooling deltaT for the intermetallic, congruently melting binary alloy NiTi and the glass-forming alloy Cu–Zr, as well as for the Zr-based ternary alloys (NixCu1−x)Zr (x = 0.3, 0.4) and the Ni-based ternary alloy Ni(Zr0.5Ti0.5). For all investigated alloys hypercooling and beyond was achieved. Our results for glass-forming CuZr indicate that the influence of the diffusion coefficient D(T) on v(T) at high undercoolings, as claimed in literature, cannot be the sole reason for the existence of a maximum in the v(T) behavior.

Item URL in elib:https://elib.dlr.de/135699/
Document Type:Article
Title:Unexpected behavior of the crystal growth velocity at the hypercooling limit
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Fopp, PatrickPatrick.Fopp (at) dlr.dehttps://orcid.org/0000-0002-8003-140X
Kolbe, Matthiasmatthias.kolbe (at) dlr.de, Institut für Materialphysik im Weltraum, DLRUNSPECIFIED
Kargl, FlorianFlorian.Kargl (at) dlr.deUNSPECIFIED
Kobold, RaphaelRaphael.Kobold (at) dlr.deUNSPECIFIED
Hornfeck, WolfgangInstitute of Physics of the Academy of Sciences of the Czech RepublicUNSPECIFIED
Date:2020
Journal or Publication Title:Physical Review Materials
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:4
DOI :10.1103/PhysRevMaterials4073405
Page Range:073405-1
Editors:
EditorsEmailEditor's ORCID iD
UNSPECIFIEDAmerican Physical SocietyUNSPECIFIED
Publisher:American Physical Society
ISSN:2475-9953
Status:Published
Keywords:undercooling, hypercooling, crystal growth, electrostatic levitation, intermetallics, glassformers
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
Deposited By: Kolbe, Matthias
Deposited On:10 Aug 2020 08:12
Last Modified:10 Aug 2020 08:12

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