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

材料科学与工程学院

Xi'an Jiaotong University

科研成果: 期刊稿件 › 文章 › 同行评审

2 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	942-946
页数	5
期刊	Intermetallics
卷	19
期	7
DOI	https://doi.org/10.1016/j.intermet.2011.02.013
出版状态	已出版 - 7月 2011

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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

UR - https://www.scopus.com/pages/publications/79955540992

U2 - 10.1016/j.intermet.2011.02.013

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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