Prediction of fracture loci for Cu47.5Zr47.5Al5

Jun Cao; Fuguo Li; Xinkai Ma; Zhankun Sun

doi:10.1016/j.tafmec.2017.11.007

Prediction of fracture loci for Cu_47.5Zr_47.5Al₅

Jun Cao, Fuguo Li, Xinkai Ma, Zhankun Sun

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

1 Scopus citations

Abstract

Due to the difficulty of preparing large bulk metallic glasses (BMGs) samples and expensive cost, there are few reports for the fracture loci of BMGs. We proposed a method of plotting fracture loci in the stress and strain spaces to reveal the law of fracture loci of BMGs in the wide stress triaxiality range. The fracture loci of Cu_47.5Zr_47.5Al₅ in stress and strain spaces were investigated by using the proposed method. The different shapes of fracture loci were found under tensile and compressive stress states_. Based on the fracture loci of Cu_47.5Zr_47.5Al₅, the plasticity of Cu_47.5Zr_47.5Al₅ is concentrated under special compressive states, such as uniaxial compression and balanced biaxial compression states. Additionally, stress triaxiality and Lode parameter largely affect the plasticity of BMGs.

Original language	English
Pages (from-to)	795-802
Number of pages	8
Journal	Theoretical and Applied Fracture Mechanics
Volume	96
DOIs	https://doi.org/10.1016/j.tafmec.2017.11.007
State	Published - Aug 2018

Keywords

Bulk metallic glasses
Fracture loci
Stress triaxiality
Unified fracture criterion

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10.1016/j.tafmec.2017.11.007

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title = "Prediction of fracture loci for Cu47.5Zr47.5Al5 ",

abstract = "Due to the difficulty of preparing large bulk metallic glasses (BMGs) samples and expensive cost, there are few reports for the fracture loci of BMGs. We proposed a method of plotting fracture loci in the stress and strain spaces to reveal the law of fracture loci of BMGs in the wide stress triaxiality range. The fracture loci of Cu47.5Zr47.5Al5 in stress and strain spaces were investigated by using the proposed method. The different shapes of fracture loci were found under tensile and compressive stress states. Based on the fracture loci of Cu47.5Zr47.5Al5, the plasticity of Cu47.5Zr47.5Al5 is concentrated under special compressive states, such as uniaxial compression and balanced biaxial compression states. Additionally, stress triaxiality and Lode parameter largely affect the plasticity of BMGs.",

keywords = "Bulk metallic glasses, Fracture loci, Stress triaxiality, Unified fracture criterion",

author = "Jun Cao and Fuguo Li and Xinkai Ma and Zhankun Sun",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2018",

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doi = "10.1016/j.tafmec.2017.11.007",

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T1 - Prediction of fracture loci for Cu47.5Zr47.5Al5

AU - Cao, Jun

AU - Li, Fuguo

AU - Ma, Xinkai

AU - Sun, Zhankun

PY - 2018/8

Y1 - 2018/8

N2 - Due to the difficulty of preparing large bulk metallic glasses (BMGs) samples and expensive cost, there are few reports for the fracture loci of BMGs. We proposed a method of plotting fracture loci in the stress and strain spaces to reveal the law of fracture loci of BMGs in the wide stress triaxiality range. The fracture loci of Cu47.5Zr47.5Al5 in stress and strain spaces were investigated by using the proposed method. The different shapes of fracture loci were found under tensile and compressive stress states. Based on the fracture loci of Cu47.5Zr47.5Al5, the plasticity of Cu47.5Zr47.5Al5 is concentrated under special compressive states, such as uniaxial compression and balanced biaxial compression states. Additionally, stress triaxiality and Lode parameter largely affect the plasticity of BMGs.

AB - Due to the difficulty of preparing large bulk metallic glasses (BMGs) samples and expensive cost, there are few reports for the fracture loci of BMGs. We proposed a method of plotting fracture loci in the stress and strain spaces to reveal the law of fracture loci of BMGs in the wide stress triaxiality range. The fracture loci of Cu47.5Zr47.5Al5 in stress and strain spaces were investigated by using the proposed method. The different shapes of fracture loci were found under tensile and compressive stress states. Based on the fracture loci of Cu47.5Zr47.5Al5, the plasticity of Cu47.5Zr47.5Al5 is concentrated under special compressive states, such as uniaxial compression and balanced biaxial compression states. Additionally, stress triaxiality and Lode parameter largely affect the plasticity of BMGs.

KW - Bulk metallic glasses

KW - Fracture loci

KW - Stress triaxiality

KW - Unified fracture criterion

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EP - 802

JO - Theoretical and Applied Fracture Mechanics

JF - Theoretical and Applied Fracture Mechanics

ER -

Prediction of fracture loci for Cu_47.5Zr_47.5Al₅

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Keywords

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