Network structure composite in phase separating Gd30Zr 25Al25(Co/Cu)20 metallic glassy alloys

H. J. Chang; E. S. Park; W. Yook; D. H. Kim

doi:10.1016/j.intermet.2010.03.039

Network structure composite in phase separating Gd₃₀Zr ₂₅Al₂₅(Co/Cu)₂₀ metallic glassy alloys

H. J. Chang, E. S. Park, W. Yook, D. H. Kim

Department of Materials Science and Engineering

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

7 Citations (Scopus)

Abstract

In the present study, 3-dimensionally interconnected microstructure resulted by spinodal decomposition in liquid state have been investigated in melt spun Gd₃₀Zr₂₅Al₂₅(Co/Cu)₂₀ alloys. In Gd₃₀Zr₂₅Al₂₅Co₂₀ melt spun ribbon, a positive heat of mixing between Gd and Zr leads the melt to solidify into two different amorphous phases due to their good glass forming abilities (GFA). Rapid quenching keeps an early stage decomposed microstructure with a fine wavelength (∼5 nm) frozen in the melt spun ribbon. Replacement of Co by Cu decreases the GFA of Gd-rich phase, thus it solidifies into crystalline phase resulting in a network structure composite consisted of one amorphous phase and one crystalline phase. This result suggests a new method to fabricate metallic glass matrix composite with network structure using phase separation.

Original language	English
Pages (from-to)	1846-1850
Number of pages	5
Journal	Intermetallics
Volume	18
Issue number	10
DOIs	https://doi.org/10.1016/j.intermet.2010.03.039
Publication status	Published - 2010 Oct

Bibliographical note

Funding Information:
This work was supported by Global Research Laboratory Program. The author, H. J. Chang, appreciates to the support by the Second Stage of Brain Korea 21 Project in Division of Humantronics Information Materials. E.S. Park was supported by Engineering Research Institute at Seoul National University.

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1016/j.intermet.2010.03.039

Cite this

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title = "Network structure composite in phase separating Gd30Zr 25Al25(Co/Cu)20 metallic glassy alloys",

abstract = "In the present study, 3-dimensionally interconnected microstructure resulted by spinodal decomposition in liquid state have been investigated in melt spun Gd30Zr25Al25(Co/Cu)20 alloys. In Gd30Zr25Al25Co20 melt spun ribbon, a positive heat of mixing between Gd and Zr leads the melt to solidify into two different amorphous phases due to their good glass forming abilities (GFA). Rapid quenching keeps an early stage decomposed microstructure with a fine wavelength (∼5 nm) frozen in the melt spun ribbon. Replacement of Co by Cu decreases the GFA of Gd-rich phase, thus it solidifies into crystalline phase resulting in a network structure composite consisted of one amorphous phase and one crystalline phase. This result suggests a new method to fabricate metallic glass matrix composite with network structure using phase separation.",

author = "Chang, {H. J.} and Park, {E. S.} and W. Yook and Kim, {D. H.}",

note = "Funding Information: This work was supported by Global Research Laboratory Program. The author, H. J. Chang, appreciates to the support by the Second Stage of Brain Korea 21 Project in Division of Humantronics Information Materials. E.S. Park was supported by Engineering Research Institute at Seoul National University.",

year = "2010",

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AU - Park, E. S.

AU - Yook, W.

AU - Kim, D. H.

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N2 - In the present study, 3-dimensionally interconnected microstructure resulted by spinodal decomposition in liquid state have been investigated in melt spun Gd30Zr25Al25(Co/Cu)20 alloys. In Gd30Zr25Al25Co20 melt spun ribbon, a positive heat of mixing between Gd and Zr leads the melt to solidify into two different amorphous phases due to their good glass forming abilities (GFA). Rapid quenching keeps an early stage decomposed microstructure with a fine wavelength (∼5 nm) frozen in the melt spun ribbon. Replacement of Co by Cu decreases the GFA of Gd-rich phase, thus it solidifies into crystalline phase resulting in a network structure composite consisted of one amorphous phase and one crystalline phase. This result suggests a new method to fabricate metallic glass matrix composite with network structure using phase separation.

AB - In the present study, 3-dimensionally interconnected microstructure resulted by spinodal decomposition in liquid state have been investigated in melt spun Gd30Zr25Al25(Co/Cu)20 alloys. In Gd30Zr25Al25Co20 melt spun ribbon, a positive heat of mixing between Gd and Zr leads the melt to solidify into two different amorphous phases due to their good glass forming abilities (GFA). Rapid quenching keeps an early stage decomposed microstructure with a fine wavelength (∼5 nm) frozen in the melt spun ribbon. Replacement of Co by Cu decreases the GFA of Gd-rich phase, thus it solidifies into crystalline phase resulting in a network structure composite consisted of one amorphous phase and one crystalline phase. This result suggests a new method to fabricate metallic glass matrix composite with network structure using phase separation.

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