Impact of free volume on shear band multiplication and bending plasticity

J. Li; C. H. Ke; X. Tong; Y. F. Jia; S. W. Wu; Y. D. Jia; J. Yi; G. Wang

doi:10.1016/j.msea.2019.01.044

Impact of free volume on shear band multiplication and bending plasticity

J. Li
, C. H. Ke
, X. Tong
, Y. F. Jia
, S. W. Wu
, Y. D. Jia
, J. Yi
, G. Wang^*

^*Corresponding author for this work

Shanghai University
State University of New York Binghamton University

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

4 Scopus citations

Abstract

In-situ electron microscopy mechanical testing is a promising deformation observation technology that has been extensively applied to explore the deformation and fracture behaviour of MGs. In this paper, we adopt it in conjunction with digital image correlation technique to investigate the impact of free volume on shear band multiplication and bending plasticity in MGs. The strain evolutions of the notched Zr-, Ce- and Mg-based MGs are studied respectively. The results indicate that the strain-concentration striations before yielding contain amounts of free volume can improve the shear band multiplication, and are beneficial to the subsequent bending plasticity. Such conclusions successively verify a novel integrated method to explore the in-situ strain field evolution process near the notch of MGs, which is advantage for understanding the deformation and fracture behaviour of MGs in a complex stress state.

Original language	English
Pages (from-to)	136-143
Number of pages	8
Journal	Materials Science and Engineering: A
Volume	747
DOIs	https://doi.org/10.1016/j.msea.2019.01.044
State	Published - 18 Feb 2019
Externally published	Yes

Keywords

Crack formation
Digital image correlation
Free volume
In-situ observation
Metallic glasses

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10.1016/j.msea.2019.01.044

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title = "Impact of free volume on shear band multiplication and bending plasticity",

abstract = "In-situ electron microscopy mechanical testing is a promising deformation observation technology that has been extensively applied to explore the deformation and fracture behaviour of MGs. In this paper, we adopt it in conjunction with digital image correlation technique to investigate the impact of free volume on shear band multiplication and bending plasticity in MGs. The strain evolutions of the notched Zr-, Ce- and Mg-based MGs are studied respectively. The results indicate that the strain-concentration striations before yielding contain amounts of free volume can improve the shear band multiplication, and are beneficial to the subsequent bending plasticity. Such conclusions successively verify a novel integrated method to explore the in-situ strain field evolution process near the notch of MGs, which is advantage for understanding the deformation and fracture behaviour of MGs in a complex stress state.",

keywords = "Crack formation, Digital image correlation, Free volume, In-situ observation, Metallic glasses",

author = "J. Li and Ke, \{C. H.\} and X. Tong and Jia, \{Y. F.\} and Wu, \{S. W.\} and Jia, \{Y. D.\} and J. Yi and G. Wang",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = feb,

day = "18",

doi = "10.1016/j.msea.2019.01.044",

language = "英语",

volume = "747",

pages = "136--143",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Impact of free volume on shear band multiplication and bending plasticity

AU - Li, J.

AU - Ke, C. H.

AU - Tong, X.

AU - Jia, Y. F.

AU - Wu, S. W.

AU - Jia, Y. D.

AU - Yi, J.

AU - Wang, G.

PY - 2019/2/18

Y1 - 2019/2/18

N2 - In-situ electron microscopy mechanical testing is a promising deformation observation technology that has been extensively applied to explore the deformation and fracture behaviour of MGs. In this paper, we adopt it in conjunction with digital image correlation technique to investigate the impact of free volume on shear band multiplication and bending plasticity in MGs. The strain evolutions of the notched Zr-, Ce- and Mg-based MGs are studied respectively. The results indicate that the strain-concentration striations before yielding contain amounts of free volume can improve the shear band multiplication, and are beneficial to the subsequent bending plasticity. Such conclusions successively verify a novel integrated method to explore the in-situ strain field evolution process near the notch of MGs, which is advantage for understanding the deformation and fracture behaviour of MGs in a complex stress state.

AB - In-situ electron microscopy mechanical testing is a promising deformation observation technology that has been extensively applied to explore the deformation and fracture behaviour of MGs. In this paper, we adopt it in conjunction with digital image correlation technique to investigate the impact of free volume on shear band multiplication and bending plasticity in MGs. The strain evolutions of the notched Zr-, Ce- and Mg-based MGs are studied respectively. The results indicate that the strain-concentration striations before yielding contain amounts of free volume can improve the shear band multiplication, and are beneficial to the subsequent bending plasticity. Such conclusions successively verify a novel integrated method to explore the in-situ strain field evolution process near the notch of MGs, which is advantage for understanding the deformation and fracture behaviour of MGs in a complex stress state.

KW - Crack formation

KW - Digital image correlation

KW - Free volume

KW - In-situ observation

KW - Metallic glasses

UR - https://www.scopus.com/pages/publications/85060344817

U2 - 10.1016/j.msea.2019.01.044

DO - 10.1016/j.msea.2019.01.044

M3 - 文章

AN - SCOPUS:85060344817

SN - 0921-5093

VL - 747

SP - 136

EP - 143

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Impact of free volume on shear band multiplication and bending plasticity

Abstract

Keywords

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