Evidence of eutectic  crystallization and transient nucleation  in Al89La6Ni5 amorphous  alloy

Yanxin Zhuang; Jianzhong Jiang; Z. G. Lin; M. Mezouar; W. Crichton; A. Inoue

doi:10.1063/1.1389506

Evidence of eutectic crystallization and transient nucleation in Al89La6Ni5 amorphous alloy

Yanxin Zhuang, Jianzhong Jiang, Z. G. Lin, M. Mezouar, W. Crichton, A. Inoue

Department of Physics

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Abstract

The phase evolution with the temperature and time in the process of crystallization of Al89La6Ni5 amorphous alloy has been investigated by in situ high-temperature and high-pressure x-ray powder diffraction using synchrotron radiation. Two crystalline phases, fcc-Al and a metastable bcc-(AlNi)(11)La-3-like phase, were identified after the first crystallization reaction, revealing a eutectic reaction instead of a primary reaction suggested in the literature. Time-dependent nucleation in the amorphous alloy is detected and the experimental data can be fitted by both the Zeldovich's and Kashchiev's transient nucleation models with transient nucleation times of 220 and 120 min, respectively.

Original language	English
Journal	Applied Physics Letters
Volume	79
Issue number	6
Pages (from-to)	743-745
ISSN	0003-6951
DOIs	https://doi.org/10.1063/1.1389506
Publication status	Published - 2001

Bibliographical note

Copyright (2001) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

KINETICS
ALUMINUM
PRESSURE
METALLIC GLASSES

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title = "Evidence of eutectic crystallization and transient nucleation in Al89La6Ni5 amorphous alloy",

abstract = "The phase evolution with the temperature and time in the process of crystallization of Al89La6Ni5 amorphous alloy has been investigated by in situ high-temperature and high-pressure x-ray powder diffraction using synchrotron radiation. Two crystalline phases, fcc-Al and a metastable bcc-(AlNi)(11)La-3-like phase, were identified after the first crystallization reaction, revealing a eutectic reaction instead of a primary reaction suggested in the literature. Time-dependent nucleation in the amorphous alloy is detected and the experimental data can be fitted by both the Zeldovich's and Kashchiev's transient nucleation models with transient nucleation times of 220 and 120 min, respectively.",

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AU - Zhuang, Yanxin

AU - Jiang, Jianzhong

AU - Lin, Z. G.

AU - Mezouar, M.

AU - Crichton, W.

AU - Inoue, A.

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PY - 2001

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AB - The phase evolution with the temperature and time in the process of crystallization of Al89La6Ni5 amorphous alloy has been investigated by in situ high-temperature and high-pressure x-ray powder diffraction using synchrotron radiation. Two crystalline phases, fcc-Al and a metastable bcc-(AlNi)(11)La-3-like phase, were identified after the first crystallization reaction, revealing a eutectic reaction instead of a primary reaction suggested in the literature. Time-dependent nucleation in the amorphous alloy is detected and the experimental data can be fitted by both the Zeldovich's and Kashchiev's transient nucleation models with transient nucleation times of 220 and 120 min, respectively.

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