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

H. J. Chang, E. S. Park, W. Yook, Do Hyang Kim

Research output: Contribution to journalArticle

6 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 languageEnglish
Pages (from-to)1846-1850
Number of pages5
JournalIntermetallics
Volume18
Issue number10
DOIs
Publication statusPublished - 2010 Oct 1

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Composite structures
Crystalline materials
Rapid quenching
Spinodal decomposition
Glass
Microstructure
Metallic glass
Phase separation
Wavelength
Composite materials
Liquids
Hot Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Chang, H. J. ; Park, E. S. ; Yook, W. ; Kim, Do Hyang. / Network structure composite in phase separating Gd30Zr 25Al25(Co/Cu)20 metallic glassy alloys. In: Intermetallics. 2010 ; Vol. 18, No. 10. pp. 1846-1850.
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Network structure composite in phase separating Gd30Zr 25Al25(Co/Cu)20 metallic glassy alloys. / Chang, H. J.; Park, E. S.; Yook, W.; Kim, Do Hyang.

In: Intermetallics, Vol. 18, No. 10, 01.10.2010, p. 1846-1850.

Research output: Contribution to journalArticle

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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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