Deformation behavior of Zr-based bulk metallic glass and composite in the supercooled liquid region

Qi Chen; Lin Liu; Kang Cheung Chan

doi:10.1007/s11433-008-0047-0

Deformation behavior of Zr-based bulk metallic glass and composite in the supercooled liquid region

Qi Chen, Lin Liu, Kang Cheung Chan

Research output: Journal article publication › Journal article › Academic research › peer-review

8 Citations (Scopus)

Abstract

A Zr-based bulk metallic glass (BMG) with a composition of (Zr75Cu25)78.5Ta4Ni10Al7.5and a bulk metallic glass matrix composite (BMGC) with a composition of (Zr75Cu25)74.5Ta8Ni10Al7.5have been prepared by copper-mold casting. The compressive deformation behavior of the BMG and BMGC was investigated in the supercooled region at different temperatures and various strain rates ranging from 8×10-4s-1to 8×10-2s-1. It was found that both the strain rate and test temperature significantly affect the deformation behavior of the two alloys. The deformation follows Newtonian flow at low strain rates but non-Newtonian flow at high strain rates. The deformation mechanism for the two kinds of alloys was discussed in terms of the transition state theory.

Original language	English
Pages (from-to)	349-355
Number of pages	7
Journal	Science in China, Series G: Physics, Mechanics and Astronomy
Volume	51
Issue number	4
DOIs	https://doi.org/10.1007/s11433-008-0047-0
Publication status	Published - 1 Apr 2008

Keywords

Bulk metallic glass
Composites
Compressive deformation
Free volume
Supercooled liquid region

ASJC Scopus subject areas

General Physics and Astronomy

More information

10.1007/s11433-008-0047-0

Cite this

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abstract = "A Zr-based bulk metallic glass (BMG) with a composition of (Zr75Cu25)78.5Ta4Ni10Al7.5and a bulk metallic glass matrix composite (BMGC) with a composition of (Zr75Cu25)74.5Ta8Ni10Al7.5have been prepared by copper-mold casting. The compressive deformation behavior of the BMG and BMGC was investigated in the supercooled region at different temperatures and various strain rates ranging from 8×10-4s-1to 8×10-2s-1. It was found that both the strain rate and test temperature significantly affect the deformation behavior of the two alloys. The deformation follows Newtonian flow at low strain rates but non-Newtonian flow at high strain rates. The deformation mechanism for the two kinds of alloys was discussed in terms of the transition state theory.",

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AU - Chen, Qi

AU - Liu, Lin

AU - Chan, Kang Cheung

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AB - A Zr-based bulk metallic glass (BMG) with a composition of (Zr75Cu25)78.5Ta4Ni10Al7.5and a bulk metallic glass matrix composite (BMGC) with a composition of (Zr75Cu25)74.5Ta8Ni10Al7.5have been prepared by copper-mold casting. The compressive deformation behavior of the BMG and BMGC was investigated in the supercooled region at different temperatures and various strain rates ranging from 8×10-4s-1to 8×10-2s-1. It was found that both the strain rate and test temperature significantly affect the deformation behavior of the two alloys. The deformation follows Newtonian flow at low strain rates but non-Newtonian flow at high strain rates. The deformation mechanism for the two kinds of alloys was discussed in terms of the transition state theory.

KW - Bulk metallic glass

KW - Composites

KW - Compressive deformation

KW - Free volume

KW - Supercooled liquid region

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DO - 10.1007/s11433-008-0047-0

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SN - 1672-1799

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JO - Science in China, Series G: Physics, Mechanics and Astronomy

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IS - 4

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Deformation behavior of Zr-based bulk metallic glass and composite in the supercooled liquid region

Abstract

Keywords

ASJC Scopus subject areas

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