Experimental characterization of plastic flow initiation in a bulk metallic glass via intermittent compression test

Z. H. Han; X. P. Li; L. He; W. Chen; F. Jiang; J. Sun

doi:10.1016/j.intermet.2011.02.013

Experimental characterization of plastic flow initiation in a bulk metallic glass via intermittent compression test

Z. H. Han
, X. P. Li
, L. He
, W. Chen
, F. Jiang
, J. Sun

School of Materials Science and Engineering

Xi'an Jiaotong University

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

2 Scopus citations

Abstract

Intermittently plastic compression tests of the Zr_52.5Cu _17.9Ni_14.6Al₁₀Ti₅ bulk metallic glass were performed under a geometrically constrained condition at different cross-head displacement rates. A flow stress-overshoot phenomenon was observed during the macroscopically plastic deformation. It was found that there is a close correlation between the stress-overshoot intensity and the spatial density of shear bands. The stress-overshoot intensity can be used as a parameter to characterize the ability of plastic flow initiation caused by the spatial nucleation of shear bands in the bulk metallic glass. The micromechanisms of shear band multiplication were discussed.

Original language	English
Pages (from-to)	942-946
Number of pages	5
Journal	Intermetallics
Volume	19
Issue number	7
DOIs	https://doi.org/10.1016/j.intermet.2011.02.013
State	Published - Jul 2011

Keywords

B. Glasses, metallic
B. Plastic deformation mechanisms
B. Yield stress
E. Mechanical properties, theory
F. Mechanical testing

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10.1016/j.intermet.2011.02.013

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title = "Experimental characterization of plastic flow initiation in a bulk metallic glass via intermittent compression test",

abstract = "Intermittently plastic compression tests of the Zr52.5Cu 17.9Ni14.6Al10Ti5 bulk metallic glass were performed under a geometrically constrained condition at different cross-head displacement rates. A flow stress-overshoot phenomenon was observed during the macroscopically plastic deformation. It was found that there is a close correlation between the stress-overshoot intensity and the spatial density of shear bands. The stress-overshoot intensity can be used as a parameter to characterize the ability of plastic flow initiation caused by the spatial nucleation of shear bands in the bulk metallic glass. The micromechanisms of shear band multiplication were discussed.",

keywords = "B. Glasses, metallic, B. Plastic deformation mechanisms, B. Yield stress, E. Mechanical properties, theory, F. Mechanical testing",

author = "Han, \{Z. H.\} and Li, \{X. P.\} and L. He and W. Chen and F. Jiang and J. Sun",

year = "2011",

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doi = "10.1016/j.intermet.2011.02.013",

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TY - JOUR

T1 - Experimental characterization of plastic flow initiation in a bulk metallic glass via intermittent compression test

AU - Han, Z. H.

AU - Li, X. P.

AU - He, L.

AU - Chen, W.

AU - Jiang, F.

AU - Sun, J.

PY - 2011/7

Y1 - 2011/7

N2 - Intermittently plastic compression tests of the Zr52.5Cu 17.9Ni14.6Al10Ti5 bulk metallic glass were performed under a geometrically constrained condition at different cross-head displacement rates. A flow stress-overshoot phenomenon was observed during the macroscopically plastic deformation. It was found that there is a close correlation between the stress-overshoot intensity and the spatial density of shear bands. The stress-overshoot intensity can be used as a parameter to characterize the ability of plastic flow initiation caused by the spatial nucleation of shear bands in the bulk metallic glass. The micromechanisms of shear band multiplication were discussed.

AB - Intermittently plastic compression tests of the Zr52.5Cu 17.9Ni14.6Al10Ti5 bulk metallic glass were performed under a geometrically constrained condition at different cross-head displacement rates. A flow stress-overshoot phenomenon was observed during the macroscopically plastic deformation. It was found that there is a close correlation between the stress-overshoot intensity and the spatial density of shear bands. The stress-overshoot intensity can be used as a parameter to characterize the ability of plastic flow initiation caused by the spatial nucleation of shear bands in the bulk metallic glass. The micromechanisms of shear band multiplication were discussed.

KW - B. Glasses, metallic

KW - B. Plastic deformation mechanisms

KW - B. Yield stress

KW - E. Mechanical properties, theory

KW - F. Mechanical testing

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DO - 10.1016/j.intermet.2011.02.013

M3 - 文章

AN - SCOPUS:79955540992

SN - 0966-9795

VL - 19

SP - 942

EP - 946

JO - Intermetallics

JF - Intermetallics

IS - 7

ER -

Experimental characterization of plastic flow initiation in a bulk metallic glass via intermittent compression test

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Keywords

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