Formation of Ductile Cu-Based Bulk Metallic Glass Matrix Composite by Ta Addition

Yu Chan Kim, Do Hyang Kim, Jae-chul Lee

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The Effect of the Ta addition on the fabrication of the ductile phase reinforced Cu-Zr-Ti bulk metallic glass (BMG) matrix composite was investigated. A composite microstructure consisted of μm-scale Ta-rich solid solution particles distributed in the BMG matrix was successfully obtained by injection casting of the (Cu60Zr30Ti10)95 Ta5 alloy into a copper mold. Ta-rich solid solution particles were observed to form first in the liquid melt during solidification, while the remaining melt solidified into the amorphous phase at lower temperature. The monolithic Cu60Zr30Ti10 BMG shows a compressive strength of 2080 MPa and a fracture strain of 3.3%, while the (Cu60Zr30Ti10)95Ta5 BMG matrix composite shows compressive strength of 2320 MPa and, in particular, a significantly improved plastic strain to failure of about 14.5%. The remarkable ductility improvement in the (Cu60Zr30Ti 10)95Ta5 composite could be explained by the presence of the highly ductile Ta-rich particles.

Original languageEnglish
Pages (from-to)2224-2227
Number of pages4
JournalMaterials Transactions
Volume44
Issue number10
Publication statusPublished - 2003 Oct 1
Externally publishedYes

Fingerprint

Metallic glass
metallic glasses
composite materials
compressive strength
Composite materials
matrices
Compressive strength
Solid solutions
solid solutions
ductility
solidification
Ductility
Solidification
Copper
Plastic deformation
Casting
plastics
injection
Fabrication
copper

Keywords

  • Bulk metallic glass matrix composite
  • Copper-based alloy
  • Ductility
  • Tantalum-rich particle

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

Cite this

Formation of Ductile Cu-Based Bulk Metallic Glass Matrix Composite by Ta Addition. / Kim, Yu Chan; Kim, Do Hyang; Lee, Jae-chul.

In: Materials Transactions, Vol. 44, No. 10, 01.10.2003, p. 2224-2227.

Research output: Contribution to journalArticle

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