Phase separation and improved plasticity by modulated heterogeneity in Cu-(Zr, Hf)-(Gd, Y)-Al metallic glasses

E. S. Park; J. S. Kyeong; D. H. Kim

doi:10.1016/j.scriptamat.2007.03.008

Phase separation and improved plasticity by modulated heterogeneity in Cu-(Zr, Hf)-(Gd, Y)-Al metallic glasses

E. S. Park, J. S. Kyeong, D. H. Kim

Department of Materials Science and Engineering

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

98 Citations (Scopus)

Abstract

The effect of replacement of Zr/Hf with Gd or Y in Cu₄₆Zr₄₇Al₇ and Cu₅₀Hf_42.5Al_7.5 alloys has been investigated. Phase separation into Cu-Gd-rich (or Cu-Y-rich) and Cu-Zr-rich (or Cu-Hf-rich) amorphous phases occurs during cooling when the Gd (or Y) content is above 15 at.% in Cu-(Zr, Hf)-(Gd, Y)-Al alloys. In particular, it was realized that the plasticity in bulk metallic glass with heterogeneity can be enhanced either by tailoring the combinations of the constituent elements or by controlling the cooling rate.

Original language	English
Pages (from-to)	49-52
Number of pages	4
Journal	Scripta Materialia
Volume	57
Issue number	1
DOIs	https://doi.org/10.1016/j.scriptamat.2007.03.008
Publication status	Published - 2007 Jul

Bibliographical note

Funding Information:
This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and the Korea Research Foundation Grant funded by the Korean Government (MOEHRD), No. KRF-2006-214-D00066. The author is indebted to Prof. Frans Spaepen, Harvard University for thoughtful advice.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2007.03.008

Cite this

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title = "Phase separation and improved plasticity by modulated heterogeneity in Cu-(Zr, Hf)-(Gd, Y)-Al metallic glasses",

abstract = "The effect of replacement of Zr/Hf with Gd or Y in Cu46Zr47Al7 and Cu50Hf42.5Al7.5 alloys has been investigated. Phase separation into Cu-Gd-rich (or Cu-Y-rich) and Cu-Zr-rich (or Cu-Hf-rich) amorphous phases occurs during cooling when the Gd (or Y) content is above 15 at.% in Cu-(Zr, Hf)-(Gd, Y)-Al alloys. In particular, it was realized that the plasticity in bulk metallic glass with heterogeneity can be enhanced either by tailoring the combinations of the constituent elements or by controlling the cooling rate.",

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note = "Funding Information: This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and the Korea Research Foundation Grant funded by the Korean Government (MOEHRD), No. KRF-2006-214-D00066. The author is indebted to Prof. Frans Spaepen, Harvard University for thoughtful advice.",

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AU - Kyeong, J. S.

AU - Kim, D. H.

N1 - Funding Information: This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and the Korea Research Foundation Grant funded by the Korean Government (MOEHRD), No. KRF-2006-214-D00066. The author is indebted to Prof. Frans Spaepen, Harvard University for thoughtful advice.

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N2 - The effect of replacement of Zr/Hf with Gd or Y in Cu46Zr47Al7 and Cu50Hf42.5Al7.5 alloys has been investigated. Phase separation into Cu-Gd-rich (or Cu-Y-rich) and Cu-Zr-rich (or Cu-Hf-rich) amorphous phases occurs during cooling when the Gd (or Y) content is above 15 at.% in Cu-(Zr, Hf)-(Gd, Y)-Al alloys. In particular, it was realized that the plasticity in bulk metallic glass with heterogeneity can be enhanced either by tailoring the combinations of the constituent elements or by controlling the cooling rate.

AB - The effect of replacement of Zr/Hf with Gd or Y in Cu46Zr47Al7 and Cu50Hf42.5Al7.5 alloys has been investigated. Phase separation into Cu-Gd-rich (or Cu-Y-rich) and Cu-Zr-rich (or Cu-Hf-rich) amorphous phases occurs during cooling when the Gd (or Y) content is above 15 at.% in Cu-(Zr, Hf)-(Gd, Y)-Al alloys. In particular, it was realized that the plasticity in bulk metallic glass with heterogeneity can be enhanced either by tailoring the combinations of the constituent elements or by controlling the cooling rate.

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Phase separation and improved plasticity by modulated heterogeneity in Cu-(Zr, Hf)-(Gd, Y)-Al metallic glasses

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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