Plasticity of Ductile Metallic Glasses: A Self-Organized Critical State

被引：281

作者：

Sun, B. A. ^{[1
]}

Yu, H. B. ^{[1
]}

Jiao, W. ^{[1
]}

Bai, H. Y. ^{[1
]}

Zhao, D. Q. ^{[1
]}

Wang, W. H. ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 03期

关键词：

VISCOPLASTIC DEFORMATION; DYNAMICS; FLOW; NANOINDENTATION;

D O I：

10.1103/PhysRevLett.105.035501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a close correlation between the dynamic behavior of serrated flow and the plasticity in metallic glasses (MGs) and show that the plastic deformation of ductile MGs can evolve into a self-organized critical state characterized by the power-law distribution of shear avalanches. A stick-slip model considering the interaction of multiple shear bands is presented to reveal complex scale-free intermittent shear-band motions in ductile MGs and quantitatively reproduce the experimental observations. Our studies have implications for understanding the precise plastic deformation mechanism of MGs.

引用

页数：4

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