Orientation effect of pre-introduced shear bands in a bulk-metallic glass on its "work-ductilising"

L. He; M. B. Zhong; Z. H. Han; Q. Zhao; F. Jiang; J. Sun

doi:10.1016/j.msea.2008.05.038

Orientation effect of pre-introduced shear bands in a bulk-metallic glass on its "work-ductilising"

L. He
, M. B. Zhong
, Z. H. Han
, Q. Zhao
, F. Jiang
, J. Sun

School of Materials Science and Engineering

Xi'an Jiaotong University

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

55 Scopus citations

Abstract

By means of the constrained compression with small specimen aspect ratios, an intrinsically brittle Zr_52.5Cu_17.9Ni_14.6Al₁₀Ti₅ bulk-metallic glass (BMG) was plastically deformed to various extents (up to 46%) at room temperature. The "work-ductilising" behavior of the deformed BMG was investigated under the subsequent compression with a normal specimen aspect ratio of 2. The plasticity after pre-plastic deformation was related to the spatial distribution of pre-introduced shear bands. It is found that the ductilisation of the BMG by pre-introduced shear bands depends upon their orientations, only the pre-introduced shear bands with the orientation close to the direction of maximum shear stress can effectively ductilise the BMG. The orientation effect of pre-introduced shear bands in the BMG on its "work-ductilising" indicates the way to further improve the plasticity of BMGs by pre-plastic deformation.

Original language	English
Pages (from-to)	285-290
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	496
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2008.05.038
State	Published - 25 Nov 2008

Keywords

Bulk-metallic glasses
Mechanical behavior
Orientation effect
Plastic deformation
Shear bands

Access to Document

10.1016/j.msea.2008.05.038

Cite this

@article{0266a31ce56e4ab18b0a19d1de8df244,

title = "Orientation effect of pre-introduced shear bands in a bulk-metallic glass on its {"}work-ductilising{"}",

abstract = "By means of the constrained compression with small specimen aspect ratios, an intrinsically brittle Zr52.5Cu17.9Ni14.6Al10Ti5 bulk-metallic glass (BMG) was plastically deformed to various extents (up to 46\%) at room temperature. The {"}work-ductilising{"} behavior of the deformed BMG was investigated under the subsequent compression with a normal specimen aspect ratio of 2. The plasticity after pre-plastic deformation was related to the spatial distribution of pre-introduced shear bands. It is found that the ductilisation of the BMG by pre-introduced shear bands depends upon their orientations, only the pre-introduced shear bands with the orientation close to the direction of maximum shear stress can effectively ductilise the BMG. The orientation effect of pre-introduced shear bands in the BMG on its {"}work-ductilising{"} indicates the way to further improve the plasticity of BMGs by pre-plastic deformation.",

keywords = "Bulk-metallic glasses, Mechanical behavior, Orientation effect, Plastic deformation, Shear bands",

author = "L. He and Zhong, \{M. B.\} and Han, \{Z. H.\} and Q. Zhao and F. Jiang and J. Sun",

year = "2008",

month = nov,

day = "25",

doi = "10.1016/j.msea.2008.05.038",

language = "英语",

volume = "496",

pages = "285--290",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

number = "1-2",

}

TY - JOUR

T1 - Orientation effect of pre-introduced shear bands in a bulk-metallic glass on its "work-ductilising"

AU - He, L.

AU - Zhong, M. B.

AU - Han, Z. H.

AU - Zhao, Q.

AU - Jiang, F.

AU - Sun, J.

PY - 2008/11/25

Y1 - 2008/11/25

N2 - By means of the constrained compression with small specimen aspect ratios, an intrinsically brittle Zr52.5Cu17.9Ni14.6Al10Ti5 bulk-metallic glass (BMG) was plastically deformed to various extents (up to 46%) at room temperature. The "work-ductilising" behavior of the deformed BMG was investigated under the subsequent compression with a normal specimen aspect ratio of 2. The plasticity after pre-plastic deformation was related to the spatial distribution of pre-introduced shear bands. It is found that the ductilisation of the BMG by pre-introduced shear bands depends upon their orientations, only the pre-introduced shear bands with the orientation close to the direction of maximum shear stress can effectively ductilise the BMG. The orientation effect of pre-introduced shear bands in the BMG on its "work-ductilising" indicates the way to further improve the plasticity of BMGs by pre-plastic deformation.

AB - By means of the constrained compression with small specimen aspect ratios, an intrinsically brittle Zr52.5Cu17.9Ni14.6Al10Ti5 bulk-metallic glass (BMG) was plastically deformed to various extents (up to 46%) at room temperature. The "work-ductilising" behavior of the deformed BMG was investigated under the subsequent compression with a normal specimen aspect ratio of 2. The plasticity after pre-plastic deformation was related to the spatial distribution of pre-introduced shear bands. It is found that the ductilisation of the BMG by pre-introduced shear bands depends upon their orientations, only the pre-introduced shear bands with the orientation close to the direction of maximum shear stress can effectively ductilise the BMG. The orientation effect of pre-introduced shear bands in the BMG on its "work-ductilising" indicates the way to further improve the plasticity of BMGs by pre-plastic deformation.

KW - Bulk-metallic glasses

KW - Mechanical behavior

KW - Orientation effect

KW - Plastic deformation

KW - Shear bands

UR - https://www.scopus.com/pages/publications/51749095917

U2 - 10.1016/j.msea.2008.05.038

DO - 10.1016/j.msea.2008.05.038

M3 - 文章

AN - SCOPUS:51749095917

SN - 0921-5093

VL - 496

SP - 285

EP - 290

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Orientation effect of pre-introduced shear bands in a bulk-metallic glass on its "work-ductilising"

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this