Deformation and strain rate sensitivity of a Zr-Cu-Fe-Al metallic glass

S. González; G. Q. Xie; D. V. Louzguine-Luzgin; J. H. Perepezko; A. Inoue

doi:10.1016/j.msea.2011.01.049

Deformation and strain rate sensitivity of a Zr-Cu-Fe-Al metallic glass

S. González, G. Q. Xie, D. V. Louzguine-Luzgin, J. H. Perepezko, A. Inoue

Advanced Institute for Materials Research (AIMR)

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

27 Citations (Scopus)

Abstract

The deformation behaviour of Zr₆₅Cu₂₀Fe₅Al₁₀ bulk metallic glass has been studied at room temperature under uniaxial compression conditions at the strain rate of 5×10^-4s^-1 and performing jump tests for the strain rates (SR) ranging between 5×10^-6s^-1 and 5×10^-2s^-1. The alloy always shows the formation of shear bands and exhibits serrated flow. In the SR range of 5×10^-6 to 5×10^-3s^-1 absence of strain rate sensitivity within the experimental error is observed. However, when the SR changes from 5×10^-3s^-1 to 5×10^-2s^-1 the alloy exhibits a negative strain rate sensitivity of -0.0026. The number of shear bands on the side view appears to be correlated with the range of stress softening from the maximum stress to the stress at which the sample fails.

Original language	English
Pages (from-to)	3506-3512
Number of pages	7
Journal	Materials Science and Engineering A
Volume	528
Issue number	9
DOIs	https://doi.org/10.1016/j.msea.2011.01.049
Publication status	Published - 2011 Apr 15

Keywords

Bulk amorphous alloys
Plasticity

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "The deformation behaviour of Zr65Cu20Fe5Al10 bulk metallic glass has been studied at room temperature under uniaxial compression conditions at the strain rate of 5×10-4s-1 and performing jump tests for the strain rates (SR) ranging between 5×10-6s-1 and 5×10-2s-1. The alloy always shows the formation of shear bands and exhibits serrated flow. In the SR range of 5×10-6 to 5×10-3s-1 absence of strain rate sensitivity within the experimental error is observed. However, when the SR changes from 5×10-3s-1 to 5×10-2s-1 the alloy exhibits a negative strain rate sensitivity of -0.0026. The number of shear bands on the side view appears to be correlated with the range of stress softening from the maximum stress to the stress at which the sample fails.",

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AU - Xie, G. Q.

AU - Louzguine-Luzgin, D. V.

AU - Perepezko, J. H.

AU - Inoue, A.

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