Cu-based bulk amorphous alloys prepared by consolidation of amorphous powders in the supercooled liquid region

H. J. Kim, J. K. Lee, S. Y. Shin, H. G. Jeong, Do Hyang Kim, J. C. Bae

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

We report the fabrication of the Cu-Ni-Zr-Ti bulk amorphous alloys by warm rolling of amorphous powders, which have been prepared by a high-pressure gas atomization. The Cu54Ni6Zr22Ti18 amorphous powders obtained by a high-pressure He gas atomization method has a wide supercooled liquid region of 53 K. By warm rolling of amorphous powders in the supercooled liquid state, a fully amorphous Cu54Ni 6Zr22Ti18 alloy is successfully synthesized. The conditions for rolling are obtained from the time-temperature-transformation curve by measuring the time for the onset of crystallization during isothermal annealing in differential scanning calorimetry. The rolled bulk amorphous Cu54Ni6Zr22Ti18 alloy exhibited high strength about 1.9 GPa, which is against similar to that obtained in the as-cast bulk amorphous alloy.

Original languageEnglish
Pages (from-to)1109-1113
Number of pages5
JournalIntermetallics
Volume12
Issue number10-11 SPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct 1

Fingerprint

Amorphous alloys
Consolidation
Powders
Liquids
Atomization
Gases
Isothermal annealing
Crystallization
Differential scanning calorimetry
Fabrication
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Kim, H. J. ; Lee, J. K. ; Shin, S. Y. ; Jeong, H. G. ; Kim, Do Hyang ; Bae, J. C. / Cu-based bulk amorphous alloys prepared by consolidation of amorphous powders in the supercooled liquid region. In: Intermetallics. 2004 ; Vol. 12, No. 10-11 SPEC. ISS. pp. 1109-1113.
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Cu-based bulk amorphous alloys prepared by consolidation of amorphous powders in the supercooled liquid region. / Kim, H. J.; Lee, J. K.; Shin, S. Y.; Jeong, H. G.; Kim, Do Hyang; Bae, J. C.

In: Intermetallics, Vol. 12, No. 10-11 SPEC. ISS., 01.10.2004, p. 1109-1113.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Cu-based bulk amorphous alloys prepared by consolidation of amorphous powders in the supercooled liquid region

AU - Kim, H. J.

AU - Lee, J. K.

AU - Shin, S. Y.

AU - Jeong, H. G.

AU - Kim, Do Hyang

AU - Bae, J. C.

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AB - We report the fabrication of the Cu-Ni-Zr-Ti bulk amorphous alloys by warm rolling of amorphous powders, which have been prepared by a high-pressure gas atomization. The Cu54Ni6Zr22Ti18 amorphous powders obtained by a high-pressure He gas atomization method has a wide supercooled liquid region of 53 K. By warm rolling of amorphous powders in the supercooled liquid state, a fully amorphous Cu54Ni 6Zr22Ti18 alloy is successfully synthesized. The conditions for rolling are obtained from the time-temperature-transformation curve by measuring the time for the onset of crystallization during isothermal annealing in differential scanning calorimetry. The rolled bulk amorphous Cu54Ni6Zr22Ti18 alloy exhibited high strength about 1.9 GPa, which is against similar to that obtained in the as-cast bulk amorphous alloy.

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