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Applied Physics Letters / Volume 79 / Issue 1 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 79, 42 (2001); http://dx.doi.org/10.1063/1.1383060 (3 pages)

Kinetic evidence for the structural similarity between a supercooled liquid and an icosahedral phase in Zr65Al7.5Ni10Cu12.5Ag5 bulk metallic glass

M. W. Chen1, I. Dutta1, T. Zhang2, A. Inoue2, and T. Sakurai2

1Department of Mechanical Engineering, Naval Postgraduate School, Monterey, California 93943
2Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

(Received 12 February 2001; accepted 8 May 2001)

By differential scanning calorimetric measurement, the kinetics of the phase transformation present in Zr65Al7.5Ni10Cu12.5Ag5 bulk metallic glass during continuous heating was investigated. It was found that the effective activation energy from a supercooled liquid to an icosahedral quasicrystalline phase is much lower than that from the supercooled liquid to eutectic crystalline phases. In addition, the activation energy from the icosahedral phase to the crystalline phases is almost the same as that from the supercooled liquid to the crystalline phases. Both of them support that the local atomic structure is similar for the supercooled liquid and the icosahedral phase in the bulk metallic glass. © 2001 American Institute of Physics.

© 2001 American Institute of Physics

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KEYWORDS and PACS

Keywords

zirconium alloys, aluminium alloys, nickel alloys, copper alloys, silver alloys, metallic glasses, quasicrystals, supercooling, differential scanning calorimetry, solidification, glass structure

PACS

  • 61.44.Br

    Quasicrystals

  • 61.43.Fs

    Glasses

  • 81.05.Kf

    Glasses (including metallic glasses)

  • 81.70.Pg

    Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis

  • 64.70.D-

    Solid-liquid transitions

  • 81.30.Fb

    Solidification

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.1383060

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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    M. W. Chen, T. Zhang, A. Inoue, T. Sakai, and T. Sakurai, Appl. Phys. Lett. 75, 1697 (1999)APPLAB000075000012001697000001.


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