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A new strain fracture criterion for bulk metallic glasses under complex compressive loading
Yu L(喻立); Wang TC(王自强)
Source PublicationINTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
2019-03-01
Volume159Pages:191-196
ISSN0020-7683
Abstract

The existing fracture criteria for bulk metallic glasses (BMGs) are described by the stress state on fracture plane. However, they are incapable to predict the fracture behavior of BMGs under compression loading because the nominal stress of most BMGs remains unchanged once materials yield. In this study, a new strain fracture criterion for bulk metallic glasses under complex compressive loading is proposed. The yield and plastic deformation before fracture under compression loading are described by the Drucker-Prager (D-P) criterion and plastic normality rule. Furthermore, due to the elastic perfect-plastic behavior of nominal stress for BMGs, we choose the nominal stress to describe the D-P yield criterion, which is well coincident with the experimental results. The two typical BMGs of Zr52.5Cu17.9Ni14.6Al10Ti5 (Vit105) and Zr41.2Ti13.8Cu12.5Ni10.0Be22.5 (Vit1) are used as examples to analyze the fracture behavior of BMGs under complex compressive loading. In this case, the plastic behavior of BMGs depends on the deformation modes, and the results can well describe the increasing tendency of plastic deformation to the higher pressure. (C) 2018 Elsevier Ltd. All rights reserved.

KeywordStrain fracture criterion Confining pressure effects Metallic glasses Compressive plastic behavior
DOI10.1016/j.ijsolstr.2018.09.030
Indexed BySCI ; EI
Language英语
WOS IDWOS:000457667200013
WOS KeywordMECHANICAL-PROPERTIES ; PLASTICITY ; DEFORMATION ; FAILURE ; BEHAVIOR ; ENHANCEMENT ; PRESSURE ; STRENGTH ; FLOW
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationNational Natural Science Foundation of China [11602272, 11602270, 11021262, 11702295, 11532013] ; National Basic Research Program of China(
Classification一类/力学重要期刊
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78268
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Yu L,Wang TC. A new strain fracture criterion for bulk metallic glasses under complex compressive loading[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2019,159:191-196.
APA Yu L,&Wang TC.(2019).A new strain fracture criterion for bulk metallic glasses under complex compressive loading.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,159,191-196.
MLA Yu L,et al."A new strain fracture criterion for bulk metallic glasses under complex compressive loading".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 159(2019):191-196.
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