In-situ monitoring the structural pathway of a Ti-based alloy from metallic liquid to metallic glass

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dc.contributor.authorGeorgarakis, Konstantinos
dc.contributor.authorStiehler, Martin E.
dc.contributor.authorHennet, Louis
dc.contributor.authorGuo, Yaofeng
dc.contributor.authorAntonowicz, Jerzy
dc.contributor.authorLouzguine-Luzgin, Dmitri V.
dc.contributor.authorJolly, Mark R.
dc.contributor.authorAndrieux, Jérôme
dc.contributor.authorVaughan, Gavin B. M.
dc.contributor.authorGreer, A. Lindsay
dc.date.accessioned2025-04-16T12:16:40Z
dc.date.available2025-04-16T12:16:40Z
dc.date.freetoread2025-04-16
dc.date.issued2025-04-25
dc.date.pubOnline2025-04-11
dc.description.abstractA metallic glass is formed when a molten metallic alloy is cooled rapidly enough that crystallisation is avoided. However, the way the atomic structure of the liquid converts to that of the glass is generally unknown. The main challenge is the sufficiently fast experimental acquisition of structural data in the undercooled liquid regime necessitated by the high cooling rates needed to avoid crystallisation. In the present study, using aerodynamic levitation, the Ni-free Ti-based alloy Ti40Zr10Cu34Pd14Sn2 was vitrified in-situ in a high-energy synchrotron X-ray beam while diffraction data were acquired during cooling from above the liquidus temperature Tliq to well below the glass-transition temperature Tg. The structure in the undercooled liquid regime shows an accelerated evolution. Both the local order in the short (SRO) and medium range (MRO) increases rapidly as the undercooled liquid approaches Tg, below which the amorphous structure “freezes”. Nevertheless, distinct differences between the evolution of SRO and MRO were observed. The structural rearrangements in the undercooled liquid are found to be correlated with a rapid increase in viscosity of the metallic liquid upon cooling. The new findings shed light on the evolution of the atomic structure of metallic liquids during vitrification and the structural origins of the sluggish kinetics that suppress nucleation and growth of crystalline phases.
dc.description.journalNameJournal of Alloys and Compounds
dc.description.sponsorshipFinancial support by the ‘‘BioTiNet’’ EU Initial Training Network (ITN) (Grant agreement ID: 264635), the JSPS KAKENHI (Grant Number: 15K18201) as well as the EPSRC-DTP studentship “Bulk Metallic Glasses: Revealing the Structural Pathway of Liquid Metals to Vitrification” (project reference 2043971) within the framework of the EPSRC Doctoral Training Partnership with Cranfield University (EP/N509450/1) is gratefully acknowledged. MES thankfully acknowledges the support by a Cranfield University 75th Anniversary Research Fellowship.
dc.identifier.citationGeorgarakis K, Stiehler ME, Hennet L, et al., (2025) In-situ monitoring the structural pathway of a Ti-based alloy from metallic liquid to metallic glass. Journal of Alloys and Compounds, Volume 1025, April 2025, Article number 180214
dc.identifier.elementsID672799
dc.identifier.issn0925-8388
dc.identifier.paperNo180214
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2025.180214
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23794
dc.identifier.volumeNo1025
dc.languageEnglish
dc.language.isoen
dc.publisherElsevier
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S0925838825017724?via%3Dihub
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject40 Engineering
dc.subject4016 Materials Engineering
dc.subject51 Physical Sciences
dc.subjectMaterials
dc.subject4016 Materials engineering
dc.subject5104 Condensed matter physics
dc.subjectMetallic glasses
dc.subjectVitrification
dc.subjectAtomic structure
dc.subjectLevitation
dc.subjectSynchrotron radiation
dc.subjectStructure formation
dc.titleIn-situ monitoring the structural pathway of a Ti-based alloy from metallic liquid to metallic glass
dc.typeArticle
dc.type.subtypeJournal Article
dcterms.dateAccepted2025-04-02

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