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

研究成果: Article › 査読

21 被引用数 (Scopus)

抄録

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.

本文言語	English
ページ（範囲）	1183-1189
ページ数	7
ジャーナル	Intermetallics
巻	12
号	10-11 SPEC. ISS.
DOI	https://doi.org/10.1016/j.intermet.2004.04.011
出版ステータス	Published - 2004 10

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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引用スタイル

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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. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2004",

month = oct,

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

language = "English",

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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. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

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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