Influence of the heat treatment on the crystallization mechanisms of Al<inf>85</inf>Y<inf>5</inf>Ni<inf>8</inf>Co<inf>2</inf> metallic glass

Á Révész; L. K. Varga; S. Suriñach; M. D. Baró

doi:https://doi.org/10.1016/j.jnoncrysol.2004.06.014

Influence of the heat treatment on the crystallization mechanisms of Al<inf>85</inf>Y<inf>5</inf>Ni<inf>8</inf>Co<inf>2</inf> metallic glass

Á Révész, L. K. Varga, S. Suriñach, M. D. Baró

Department of Physics

Research output: Contribution to journal › Article › Research › peer-review

8 Citations (Scopus)

Abstract

Glass forming ability, crystallization and stability of a rapidly quenched, Al85Y5Ni8Co2 amorphous alloy have been investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Calorimetric results obtained in continuous heating regime reveal a glass transition followed by a wide supercooled liquid region (27°C) and then by a three-stage crystallization process, starting with the primary formation of nanoscale α-Al particles. However, isothermal annealing of the as-quenched samples below the glass-transition temperature activates the first two crystallization stages and an unidentified compound is formed conjointly with a-Al. Kinetic analysis suggests that crystallization occurs through nucleation and three-dimensional growth. © 2004 Published by Elsevier B.V.

Original language	English
Pages (from-to)	143-149
Journal	Journal of Non-Crystalline Solids
Volume	343
DOIs	https://doi.org/10.1016/j.jnoncrysol.2004.06.014
Publication status	Published - 1 Sep 2004

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title = "Influence of the heat treatment on the crystallization mechanisms of Al85Y5Ni8Co2 metallic glass",

abstract = "Glass forming ability, crystallization and stability of a rapidly quenched, Al85Y5Ni8Co2 amorphous alloy have been investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Calorimetric results obtained in continuous heating regime reveal a glass transition followed by a wide supercooled liquid region (27°C) and then by a three-stage crystallization process, starting with the primary formation of nanoscale α-Al particles. However, isothermal annealing of the as-quenched samples below the glass-transition temperature activates the first two crystallization stages and an unidentified compound is formed conjointly with a-Al. Kinetic analysis suggests that crystallization occurs through nucleation and three-dimensional growth. {\textcopyright} 2004 Published by Elsevier B.V.",

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T1 - Influence of the heat treatment on the crystallization mechanisms of Al85Y5Ni8Co2 metallic glass

AU - Révész, Á

AU - Varga, L. K.

AU - Suriñach, S.

AU - Baró, M. D.

PY - 2004/9/1

Y1 - 2004/9/1

N2 - Glass forming ability, crystallization and stability of a rapidly quenched, Al85Y5Ni8Co2 amorphous alloy have been investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Calorimetric results obtained in continuous heating regime reveal a glass transition followed by a wide supercooled liquid region (27°C) and then by a three-stage crystallization process, starting with the primary formation of nanoscale α-Al particles. However, isothermal annealing of the as-quenched samples below the glass-transition temperature activates the first two crystallization stages and an unidentified compound is formed conjointly with a-Al. Kinetic analysis suggests that crystallization occurs through nucleation and three-dimensional growth. © 2004 Published by Elsevier B.V.

AB - Glass forming ability, crystallization and stability of a rapidly quenched, Al85Y5Ni8Co2 amorphous alloy have been investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Calorimetric results obtained in continuous heating regime reveal a glass transition followed by a wide supercooled liquid region (27°C) and then by a three-stage crystallization process, starting with the primary formation of nanoscale α-Al particles. However, isothermal annealing of the as-quenched samples below the glass-transition temperature activates the first two crystallization stages and an unidentified compound is formed conjointly with a-Al. Kinetic analysis suggests that crystallization occurs through nucleation and three-dimensional growth. © 2004 Published by Elsevier B.V.

U2 - https://doi.org/10.1016/j.jnoncrysol.2004.06.014

DO - https://doi.org/10.1016/j.jnoncrysol.2004.06.014

M3 - Article

VL - 343

SP - 143

EP - 149

ER -

Influence of the heat treatment on the crystallization mechanisms of Al<inf>85</inf>Y<inf>5</inf>Ni<inf>8</inf>Co<inf>2</inf> metallic glass

Abstract

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