Ductile fracture of bulk metallic glass Zr50Cu40Al10 under high strain-rate loading

被引：33

作者：

Lu, L. ^{[1
,2
,3
]}

Li, C. ^{[3
,4
]}

Wang, W. H. ^{[5
]}

Zhu, M. H. ^{[2
]}

Gong, X. L. ^{[1
]}

Luo, S. N. ^{[2
,3
]}

机构：

[1] Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Anhui, Peoples R China

[2] Southwest Jiaotong Univ, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China

[3] Peac Inst Multiscale Sci, Chengdu 610207, Sichuan, Peoples R China

[4] Sichuan Univ, Coll Phys Sci & Technol, Chengdu 610064, Sichuan, Peoples R China

[5] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 651卷

关键词：

Bulk metallic glass; Strain rate; Microstructure; Ductility; Spallation; TENSILE DUCTILITY; DYNAMIC FRACTURE; COMPOSITES; TEMPERATURE; COMPRESSION; TRANSITION; STRENGTH;

D O I：

10.1016/j.msea.2015.11.040

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We investigate dynamic fracture or spallation of a ternary bulk metallic glass, Zr50Cu40Al10, under high strain-rate (4-5 x 10(5) s(-1)) loading. Both incipient and full spall are achieved. Free-surface velocity histories and microstructure features of the recovered samples, such as necking, softening, microvoids, and rounded cups/cones, indicate exceptional ductility in deformation and fracture of this glass. Softening/necking is attributed to decreased glass transition temperature with increasing tension, and rounded cups/cones, to localized shear banding, void formation, and their interactions. (c) 2015 Elsevier B.V. All rights reserved.

引用

页码：848 / 853

页数：6

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