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

Dmitri V. Louzguine-Luzgin , Konstantinos Georgarakis (1) , Andrey Tsarkov , Alexey Solonin , Veijo Honkimaki , Louis Hennet , Alain R. Yavari (1)

1 SIMaP - Science et Ingénierie des Matériaux et Procédés

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.

Domaines: Matériaux

Dmitri V. Louzguine-Luzgin, Konstantinos Georgarakis, Andrey Tsarkov, Alexey Solonin, Veijo Honkimaki, et al.. Structural changes in liquid Fe and Fe–B alloy on cooling. Journal of Molecular Liquids, 2015, 209 (5), pp.233-238. ⟨10.1016/j.molliq.2015.05.062⟩. ⟨hal-01220232⟩