Deformation behavior of a Ni59Zr20Ti 16Si2Sn3 metallic glass matrix composite reinforced by copper synthesized by warm extrusion of powders

D. H. Bae, M. H. Lee, S. Yi, D. H. Kim, D. J. Sordelet

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A metallic glass matrix composite (MGMC) reinforced by copper short fibers has been prepared by warm extrusion of powders, and its deformation behavior at room temperature and in the supercooled liquid region of the metallic glass has been investigated. A mixture of Ni59Zr20Ti 16Si2Sn3 metallic glass powders and copper powders is extruded in the supercooled liquid region of the metallic glass with an extrusion ratio of 5. The volume fraction of the copper phase is 0.2. After extrusion, initially spherical powders are elongated along the extrusion direction; no pores are visible. The MGMC shows a high failure strength of around 1.85 GPa, slightly lower than that of the as-cast Ni59Zr 20Ti16Si2Sn3 metallic glass, under uniaxial compression. However, due to the crack bridging mechanism produced by the randomly distributed copper short fibers, the MGMC does not catastrophically fail by a single shear band propagating across the whole monolithic sample. In the supercooled liquid region of the metallic glass, the MGMC shows large elongation to failure but fails by cavitation due to the preexisting Ni-based crystalline powders.

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume337
Issue number1
DOIs
Publication statusPublished - 2004 Jun 1

Fingerprint

Metallic glass
metallic glasses
Powders
Extrusion
Copper
copper
composite materials
Composite materials
matrices
Liquids
liquids
crack bridging
Copper powder
fibers
Shear bands
Fibers
cavitation flow
Cavitation
elongation
casts

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

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title = "Deformation behavior of a Ni59Zr20Ti 16Si2Sn3 metallic glass matrix composite reinforced by copper synthesized by warm extrusion of powders",
abstract = "A metallic glass matrix composite (MGMC) reinforced by copper short fibers has been prepared by warm extrusion of powders, and its deformation behavior at room temperature and in the supercooled liquid region of the metallic glass has been investigated. A mixture of Ni59Zr20Ti 16Si2Sn3 metallic glass powders and copper powders is extruded in the supercooled liquid region of the metallic glass with an extrusion ratio of 5. The volume fraction of the copper phase is 0.2. After extrusion, initially spherical powders are elongated along the extrusion direction; no pores are visible. The MGMC shows a high failure strength of around 1.85 GPa, slightly lower than that of the as-cast Ni59Zr 20Ti16Si2Sn3 metallic glass, under uniaxial compression. However, due to the crack bridging mechanism produced by the randomly distributed copper short fibers, the MGMC does not catastrophically fail by a single shear band propagating across the whole monolithic sample. In the supercooled liquid region of the metallic glass, the MGMC shows large elongation to failure but fails by cavitation due to the preexisting Ni-based crystalline powders.",
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Deformation behavior of a Ni59Zr20Ti 16Si2Sn3 metallic glass matrix composite reinforced by copper synthesized by warm extrusion of powders. / Bae, D. H.; Lee, M. H.; Yi, S.; Kim, D. H.; Sordelet, D. J.

In: Journal of Non-Crystalline Solids, Vol. 337, No. 1, 01.06.2004, p. 15-20.

Research output: Contribution to journalArticle

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AU - Bae, D. H.

AU - Lee, M. H.

AU - Yi, S.

AU - Kim, D. H.

AU - Sordelet, D. J.

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N2 - A metallic glass matrix composite (MGMC) reinforced by copper short fibers has been prepared by warm extrusion of powders, and its deformation behavior at room temperature and in the supercooled liquid region of the metallic glass has been investigated. A mixture of Ni59Zr20Ti 16Si2Sn3 metallic glass powders and copper powders is extruded in the supercooled liquid region of the metallic glass with an extrusion ratio of 5. The volume fraction of the copper phase is 0.2. After extrusion, initially spherical powders are elongated along the extrusion direction; no pores are visible. The MGMC shows a high failure strength of around 1.85 GPa, slightly lower than that of the as-cast Ni59Zr 20Ti16Si2Sn3 metallic glass, under uniaxial compression. However, due to the crack bridging mechanism produced by the randomly distributed copper short fibers, the MGMC does not catastrophically fail by a single shear band propagating across the whole monolithic sample. In the supercooled liquid region of the metallic glass, the MGMC shows large elongation to failure but fails by cavitation due to the preexisting Ni-based crystalline powders.

AB - A metallic glass matrix composite (MGMC) reinforced by copper short fibers has been prepared by warm extrusion of powders, and its deformation behavior at room temperature and in the supercooled liquid region of the metallic glass has been investigated. A mixture of Ni59Zr20Ti 16Si2Sn3 metallic glass powders and copper powders is extruded in the supercooled liquid region of the metallic glass with an extrusion ratio of 5. The volume fraction of the copper phase is 0.2. After extrusion, initially spherical powders are elongated along the extrusion direction; no pores are visible. The MGMC shows a high failure strength of around 1.85 GPa, slightly lower than that of the as-cast Ni59Zr 20Ti16Si2Sn3 metallic glass, under uniaxial compression. However, due to the crack bridging mechanism produced by the randomly distributed copper short fibers, the MGMC does not catastrophically fail by a single shear band propagating across the whole monolithic sample. In the supercooled liquid region of the metallic glass, the MGMC shows large elongation to failure but fails by cavitation due to the preexisting Ni-based crystalline powders.

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