Comparative studies of crystallization of a bulk Zr-Al-Ti-Cu-Ni amorphous alloy

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

23 Scopus Citations
View graph of relations

Author(s)

  • T. G. Nieh
  • C. Iwamoto
  • Y. Ikuhara
  • K. W. Lee
  • Y. W. Chung

Detail(s)

Original languageEnglish
Pages (from-to)1183-1189
Journal / PublicationIntermetallics
Volume12
Issue number10-11 SPEC. ISS.
Publication statusPublished - Oct 2004
Externally publishedYes

Abstract

The recrystallization and associated nanoindentation behavior of a Zr-10Al-5Ti-17.9Cu-14.6Ni (at.%) bulk amorphous alloy was investigated using in situ transmission electron microscopy and high-temperature nanoindentation. The onset of recrystallization occurs around 710 K, with the formation of Zr 2Cu, Al3Zr4, and Ni10Zr7. Nanoindentation hardness and elastic modulus were obtained as a function of temperature from 298 to 723 K. The hardness was measured to be ∼7.5 GPa and found unchanged at temperatures below 673 K, but softened rapidly and decreased to 5 GPa at 723 K. These results can be correlated very well with the onset of recrystallization of this alloy at ∼700 K. The present study demonstrates that transmission electron microscopy, hot-stage nanoindentation, and X-ray diffraction are supplementary techniques for the study of glass relaxation and crystallization of metallic glasses. © 2004 Elsevier Ltd. All rights reserved.

Research Area(s)

  • B. Glasses, metallic, B. Mechanical properties at high temperatures, B. Phase identification, C. Recrystallization and recovery (including grain growth), F. Electron microscopy, transmission

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Comparative studies of crystallization of a bulk Zr-Al-Ti-Cu-Ni amorphous alloy. / Nieh, T. G.; Iwamoto, C.; Ikuhara, Y.; Lee, K. W.; Chung, Y. W.

In: Intermetallics, Vol. 12, No. 10-11 SPEC. ISS., 10.2004, p. 1183-1189.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review