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

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

doi:10.1016/j.intermet.2004.04.011

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

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

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

21 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1183-1189
Number of pages	7
Journal	Intermetallics
Volume	12
Issue number	10-11 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.intermet.2004.04.011
Publication status	Published - 2004 Oct

Keywords

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

ASJC Scopus subject areas

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.intermet.2004.04.011

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title = "Comparative studies of crystallization of a bulk Zr-Al-Ti-Cu-Ni amorphous alloy",

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.",

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

author = "Nieh, {T. G.} and C. Iwamoto and Y. Ikuhara and Lee, {K. W.} and Chung, {Y. W.}",

note = "Funding Information: This work was performed under the auspices of the US Department of Energy by University of California, Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48.",

year = "2004",

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doi = "10.1016/j.intermet.2004.04.011",

language = "English",

volume = "12",

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AU - Nieh, T. G.

AU - Iwamoto, C.

AU - Ikuhara, Y.

AU - Lee, K. W.

AU - Chung, Y. W.

N1 - Funding Information: This work was performed under the auspices of the US Department of Energy by University of California, Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48.

PY - 2004/10

Y1 - 2004/10

N2 - 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.

AB - 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.

KW - B. Glasses, metallic

KW - B. Mechanical properties at high temperatures

KW - B. Phase identification

KW - C. Recrystallization and recovery (including grain growth)

KW - F. Electron microscopy, transmission

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IS - 10-11 SPEC. ISS.

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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