An atomistic study of the structural changes in a Zr-Cu-Ni-Al glass-forming liquid on vitrification monitored in-situ by X-ray diffraction and molecular dynamics simulation

被引：7
作者：
Louzguine-Luzgin, D., V [1 ,2 ]
Georgarakis, K. [3 ]
Andrieux, J. [4 ,5 ]
Hennet, L. [6 ]
Morishita, T. [2 ,7 ]
Nishio, K. [2 ,7 ]
Belosludov, R., V [8 ]
机构：
[1] Tohoku Univ, WPI Adv Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
[2] Natl Inst Adv Ind Sci & Technol, MathAM OIL, Sendai, Miyagi 9808577, Japan
[3] Cranfield Univ, Sch Aerosp Transport & Mfg, Cranfield MK43 0AL, Beds, England
[4] European Synchrotron Radiat Facil, F-38042 Grenoble, France
[5] Univ Claude Bernard Lyon 1, Lab Multimat & Interfaces, Univ Lyon, UMR CNRS 5615, F-69622 Villeurbanne, France
[6] Univ Orleans, CNRS CEMHTI, F-45071 Orleans 2, France
[7] Natl Inst Adv Ind Sci & Technol, Res Ctr Computat Design Adv Funct Mat CD FMAT, Cent 2, Umezono 1-1-1, Tsukuba, Ibaraki 3058568, Japan
[8] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
INTERMETALLICS | 2020年 / 122卷
关键词：
Metallic glass; Liquid; Fragility; X-ray diffraction; Structure; Synchrotron radiation; BULK METALLIC GLASSES; ENTHALPY RELAXATION; SUPERCOOLED LIQUID; VISCOUS-FLOW; FREE-VOLUME; TRANSITION; FRAGILITY; VISCOSITY; ALLOY; BEHAVIOR;
D O I：
10.1016/j.intermet.2020.106795
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Structural changes in the Zr55Cu30Ni5Al10 liquid alloy on cooling from above the equilibrium liquidus temperature are studied by synchrotron radiation X-ray diffraction and compared with the results of first-principles molecular dynamics simulation. In-situ vitrification of the studied alloy is achieved using a containerless levitation technique. Subsequent analysis of the atomic and electronic structure of the alloy in liquid and glassy states reveals formation of medium-range order on cooling and its relationship with liquid fragility. The structural changes in this alloy are smaller in comparison with a more fragile one.
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页数：8
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