Time Scales for Viscous Flow, Atomic Transport, and Crystallization in the Liquid and Supercooled Liquid States of Zr{sub 41.2 } Ti{sub 1 3.8} Cu{sub 12.5} Ni{sub 10.0} Be{sub 22.5}

Journal Article · Mon Mar 01 00:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.2290· OSTI ID:365844

Masuhr, A; Waniuk, T A; Busch, R; Johnson, W L ^[1]

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1. W. M. Keck Laboratory of Engineering Materials, California Institute of Technology, Pasadena, California 91125 (United States)

The shear viscosity of liquid Zr{sub 41.2} Ti{sub 13.8} Cu{sub 12.5} Ni{sub 10.0} Be{sub 22.5} has been measured. At the liquidus temperature we find an extremely high viscosity of 2.5thinspthinspPathinsps, favoring glass formation. At deep supercooling the time scales for the diffusion of small and medium sized atoms as reported in the literature decouple from the internal relaxation time as probed by our viscosity measurements. Similarly, crystallization from the supercooled liquid state can be described with an effective diffusivity that scales with the viscosity at high temperatures and is Arrhenius-like at deep supercooling. {copyright} {ital 1999} {ital The American Physical Society}

• Research Organization: California Institute of Technology (CalTech), Pasadena, CA (United States)
• DOE Contract Number: FG03-86ER45242
• OSTI ID: 365844
• Journal Information: Physical Review Letters, Vol. 82, Issue 11; Other Information: PBD: Mar 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
LIQUID METALS
ZIRCONIUM ALLOYS
TITANIUM ALLOYS
COPPER ALLOYS
NICKEL ALLOYS
BERYLLIUM ALLOYS
CRYSTALLIZATION
VISCOUS FLOW
ARRHENIUS EQUATION
SCALING
RELAXATION TIME
DIFFUSION