Effect of loading rate on failure in Zr-based bulk metallic glass

Y. F. Xue; H. N. Cai; L. Wang; F. C. Wang; H. F. Zhang

doi:10.1016/j.msea.2007.04.044

Effect of loading rate on failure in Zr-based bulk metallic glass

Y. F. Xue, H. N. Cai, L. Wang^*, F. C. Wang, H. F. Zhang

^*Corresponding author for this work

School of Material Science and Engineering

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

78 Citations (Scopus)

Abstract

The uniaxial compressive behavior of Zr₃₈Ti₁₇Cu_10.5Co₁₂Be_22.5 bulk metallic glass was investigated over a wide strain rate range between 10^-4 and 10² s^-1 at room temperature. Fracture stress as well as strain was found to decrease with increasing strain rate. Specimens subjected to quasistatic loading developed mature shear bands and substantial plastic deformations, fracture surfaces were relatively smooth and revealed a well developed and uniformly distributed mixture of vein-like patterns and river-like patterns. The dynamically loaded specimens, on the other hand, fractured along one dominant shear band with relatively rough fracture surfaces, such as non-uniformly distributed vein-like patterns, micro shear bands, microcracks and liquid droplets. The experimental results demonstrate that the fracture behavior of the present bulk metallic glass is strongly affected by the strain rate. A negative strain rate sensitivity was found and discussed in detail.

Original language	English
Pages (from-to)	105-110
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	473
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2007.04.044
Publication status	Published - 25 Jan 2008

Keywords

Bulk metallic glass (BMG)
Compressive deformation
Fracture behavior
Strain rate sensitivity

Access to Document

10.1016/j.msea.2007.04.044

Cite this

@article{6ed63f4b7c214003aa7eb9c1400f9596,

title = "Effect of loading rate on failure in Zr-based bulk metallic glass",

abstract = "The uniaxial compressive behavior of Zr38Ti17Cu10.5Co12Be22.5 bulk metallic glass was investigated over a wide strain rate range between 10-4 and 102 s-1 at room temperature. Fracture stress as well as strain was found to decrease with increasing strain rate. Specimens subjected to quasistatic loading developed mature shear bands and substantial plastic deformations, fracture surfaces were relatively smooth and revealed a well developed and uniformly distributed mixture of vein-like patterns and river-like patterns. The dynamically loaded specimens, on the other hand, fractured along one dominant shear band with relatively rough fracture surfaces, such as non-uniformly distributed vein-like patterns, micro shear bands, microcracks and liquid droplets. The experimental results demonstrate that the fracture behavior of the present bulk metallic glass is strongly affected by the strain rate. A negative strain rate sensitivity was found and discussed in detail.",

keywords = "Bulk metallic glass (BMG), Compressive deformation, Fracture behavior, Strain rate sensitivity",

author = "Xue, {Y. F.} and Cai, {H. N.} and L. Wang and Wang, {F. C.} and Zhang, {H. F.}",

year = "2008",

month = jan,

day = "25",

doi = "10.1016/j.msea.2007.04.044",

language = "English",

volume = "473",

pages = "105--110",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd.",

number = "1-2",

}

TY - JOUR

T1 - Effect of loading rate on failure in Zr-based bulk metallic glass

AU - Xue, Y. F.

AU - Cai, H. N.

AU - Wang, L.

AU - Wang, F. C.

AU - Zhang, H. F.

PY - 2008/1/25

Y1 - 2008/1/25

N2 - The uniaxial compressive behavior of Zr38Ti17Cu10.5Co12Be22.5 bulk metallic glass was investigated over a wide strain rate range between 10-4 and 102 s-1 at room temperature. Fracture stress as well as strain was found to decrease with increasing strain rate. Specimens subjected to quasistatic loading developed mature shear bands and substantial plastic deformations, fracture surfaces were relatively smooth and revealed a well developed and uniformly distributed mixture of vein-like patterns and river-like patterns. The dynamically loaded specimens, on the other hand, fractured along one dominant shear band with relatively rough fracture surfaces, such as non-uniformly distributed vein-like patterns, micro shear bands, microcracks and liquid droplets. The experimental results demonstrate that the fracture behavior of the present bulk metallic glass is strongly affected by the strain rate. A negative strain rate sensitivity was found and discussed in detail.

AB - The uniaxial compressive behavior of Zr38Ti17Cu10.5Co12Be22.5 bulk metallic glass was investigated over a wide strain rate range between 10-4 and 102 s-1 at room temperature. Fracture stress as well as strain was found to decrease with increasing strain rate. Specimens subjected to quasistatic loading developed mature shear bands and substantial plastic deformations, fracture surfaces were relatively smooth and revealed a well developed and uniformly distributed mixture of vein-like patterns and river-like patterns. The dynamically loaded specimens, on the other hand, fractured along one dominant shear band with relatively rough fracture surfaces, such as non-uniformly distributed vein-like patterns, micro shear bands, microcracks and liquid droplets. The experimental results demonstrate that the fracture behavior of the present bulk metallic glass is strongly affected by the strain rate. A negative strain rate sensitivity was found and discussed in detail.

KW - Bulk metallic glass (BMG)

KW - Compressive deformation

KW - Fracture behavior

KW - Strain rate sensitivity

UR - http://www.scopus.com/inward/record.url?scp=37449028543&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2007.04.044

DO - 10.1016/j.msea.2007.04.044

M3 - Article

AN - SCOPUS:37449028543

SN - 0921-5093

VL - 473

SP - 105

EP - 110

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Effect of loading rate on failure in Zr-based bulk metallic glass

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this