Structural changes in liquid Fe and Fe–B alloy on cooling

Structural changes in liquid Fe and Fe–B alloy on cooling

The existence of liquid–liquid phase transitions has been suggested for liquid Fe and some of its alloys. In order to shed light on this phenomenon in-situ cooling of the Fe80B20 and Fe melts was performed under a synchrotron beam radiation. It allowed for the continuous acquisition of X-ray diffrac...

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Veröffentlicht in:Journal of molecular liquids 2015-09, Vol.209 (5), p.233-238
Hauptverfasser: Louzguine-Luzgin, Dmitri V., Georgarakis, Konstantinos, Tsarkov, Andrey, Solonin, Alexey, Honkimaki, Veijo, Hennet, Louis, Yavari, Alain R.
Format: Artikel
Sprache:eng
Schlagworte:
Atomic structure
Chemical Sciences
Material chemistry
Metallic liquids
Synchrotron radiation X-ray diffractometry
Undercooling
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Zusammenfassung:The existence of liquid–liquid phase transitions has been suggested for liquid Fe and some of its alloys. In order to shed light on this phenomenon in-situ cooling of the Fe80B20 and Fe melts was performed under a synchrotron beam radiation. It allowed for the continuous acquisition of X-ray diffraction spectra in the supercooled liquid region below the liquidus temperature. The procedure allowed monitoring of the structural changes in the supercooled liquid state using real-space atomic pair PDF(R) and radial RDF(R) distribution functions. The results are discussed in comparison with those of molecular dynamics simulation for liquid Fe. •Structural changes in liquid Fe and Fe–B alloy on cooling•X-ray diffraction spectra in the supercooled liquid region•Monitoring structural changes using real-space atomic pair distribution function•Cluster analysis by Molecular Dynamics simulation
ISSN:0167-7322
1873-3166
DOI:10.1016/j.molliq.2015.05.062