Plasticity improvement of ZrCu-based bulk metallic glass by ex situ dispersed Ta particles

J. B. Li; J. S.C. Jang; S. R. Jian; K. W. Chen; J. F. Lin; J. C. Huang

doi:10.1016/j.msea.2011.08.006

Plasticity improvement of ZrCu-based bulk metallic glass by ex situ dispersed Ta particles

J. B. Li, J. S.C. Jang, S. R. Jian, K. W. Chen, J. F. Lin, J. C. Huang

Graduate Institute of Materials Science and Engineering

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

39 Scopus citations

Abstract

The (Zr₄₈Cu₃₆Al₈Ag₈)_99.25Si_0.75-based bulk metallic glass composite (BMGC) rods ex situ dispersed with Ta particles (with a diameter of 2-4mm) have been successfully fabricated by suction casting and characterized. These Ta-added BMGCs exhibit similar thermal properties in comparison with its base alloy counterpart, with relatively high glass forming ability (GFA). The results of compression test show that a superior mechanical performance with up to 22% compressive plastic strain, 1800MPa yield strength and 1850MPa fracture strength at room temperature can be obtained for the 2mm diameter rod of the ZrCu-based BMGC with 10vol.% Ta particles. These ex situ dispersed Ta particles (20±8μm) would arrange as semi-uniform confinement zones to restrict the shear band propagation. In addition, for a given Ta particle size, higher volume fraction particles would lead to more interfacial areas, shorter inter-particle spacings, smaller confinement zone sizes than the smaller volume fraction particles, and results in presenting larger compression plasticity.

Original language	English
Pages (from-to)	8244-8248
Number of pages	5
Journal	Materials Science and Engineering A
Volume	528
Issue number	28
DOIs	https://doi.org/10.1016/j.msea.2011.08.006
State	Published - 25 Oct 2011

Keywords

Casting
Composites
Dispersion strengthening
Mechanical properties at ambient temperature
Metallic glasses

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title = "Plasticity improvement of ZrCu-based bulk metallic glass by ex situ dispersed Ta particles",

abstract = "The (Zr48Cu36Al8Ag8)99.25Si0.75-based bulk metallic glass composite (BMGC) rods ex situ dispersed with Ta particles (with a diameter of 2-4mm) have been successfully fabricated by suction casting and characterized. These Ta-added BMGCs exhibit similar thermal properties in comparison with its base alloy counterpart, with relatively high glass forming ability (GFA). The results of compression test show that a superior mechanical performance with up to 22% compressive plastic strain, 1800MPa yield strength and 1850MPa fracture strength at room temperature can be obtained for the 2mm diameter rod of the ZrCu-based BMGC with 10vol.% Ta particles. These ex situ dispersed Ta particles (20±8μm) would arrange as semi-uniform confinement zones to restrict the shear band propagation. In addition, for a given Ta particle size, higher volume fraction particles would lead to more interfacial areas, shorter inter-particle spacings, smaller confinement zone sizes than the smaller volume fraction particles, and results in presenting larger compression plasticity.",

keywords = "Casting, Composites, Dispersion strengthening, Mechanical properties at ambient temperature, Metallic glasses",

author = "Li, {J. B.} and Jang, {J. S.C.} and Jian, {S. R.} and Chen, {K. W.} and Lin, {J. F.} and Huang, {J. C.}",

note = "Funding Information: The authors are gratefully to acknowledge the sponsorship by National Science Council of Taiwan, ROC , under the Project No. NSC95-2210-E-214-015-MY3 and NSC98-2221-E-008-116-MY3. In addition, the authors also like to acknowledge the help on SEM and TEM analysis by the Micro and Nano Analysis Laboratory of I-Shou University.",

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T1 - Plasticity improvement of ZrCu-based bulk metallic glass by ex situ dispersed Ta particles

AU - Li, J. B.

AU - Jang, J. S.C.

AU - Jian, S. R.

AU - Chen, K. W.

AU - Lin, J. F.

AU - Huang, J. C.

N1 - Funding Information: The authors are gratefully to acknowledge the sponsorship by National Science Council of Taiwan, ROC , under the Project No. NSC95-2210-E-214-015-MY3 and NSC98-2221-E-008-116-MY3. In addition, the authors also like to acknowledge the help on SEM and TEM analysis by the Micro and Nano Analysis Laboratory of I-Shou University.

PY - 2011/10/25

Y1 - 2011/10/25

N2 - The (Zr48Cu36Al8Ag8)99.25Si0.75-based bulk metallic glass composite (BMGC) rods ex situ dispersed with Ta particles (with a diameter of 2-4mm) have been successfully fabricated by suction casting and characterized. These Ta-added BMGCs exhibit similar thermal properties in comparison with its base alloy counterpart, with relatively high glass forming ability (GFA). The results of compression test show that a superior mechanical performance with up to 22% compressive plastic strain, 1800MPa yield strength and 1850MPa fracture strength at room temperature can be obtained for the 2mm diameter rod of the ZrCu-based BMGC with 10vol.% Ta particles. These ex situ dispersed Ta particles (20±8μm) would arrange as semi-uniform confinement zones to restrict the shear band propagation. In addition, for a given Ta particle size, higher volume fraction particles would lead to more interfacial areas, shorter inter-particle spacings, smaller confinement zone sizes than the smaller volume fraction particles, and results in presenting larger compression plasticity.

AB - The (Zr48Cu36Al8Ag8)99.25Si0.75-based bulk metallic glass composite (BMGC) rods ex situ dispersed with Ta particles (with a diameter of 2-4mm) have been successfully fabricated by suction casting and characterized. These Ta-added BMGCs exhibit similar thermal properties in comparison with its base alloy counterpart, with relatively high glass forming ability (GFA). The results of compression test show that a superior mechanical performance with up to 22% compressive plastic strain, 1800MPa yield strength and 1850MPa fracture strength at room temperature can be obtained for the 2mm diameter rod of the ZrCu-based BMGC with 10vol.% Ta particles. These ex situ dispersed Ta particles (20±8μm) would arrange as semi-uniform confinement zones to restrict the shear band propagation. In addition, for a given Ta particle size, higher volume fraction particles would lead to more interfacial areas, shorter inter-particle spacings, smaller confinement zone sizes than the smaller volume fraction particles, and results in presenting larger compression plasticity.

KW - Casting

KW - Composites

KW - Dispersion strengthening

KW - Mechanical properties at ambient temperature

KW - Metallic glasses

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Plasticity improvement of ZrCu-based bulk metallic glass by ex situ dispersed Ta particles

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Keywords

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