Correlation between fractal dimension and strength of brittle bulk metallic glasses

被引：2

作者：

Yang, W. ^{[1
,2
]}

Zhao, Y. ^{[1
]}

Dou, L. ^{[2
]}

Dun, C. ^{[3
]}

Zhang, J. ^{[1
]}

Li, M. ^{[1
]}

Zhao, G. ^{[1
]}

Xue, L. ^{[2
]}

Bian, H. ^{[4
]}

Liu, H. ^{[2
]}

机构：

[1] China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Peoples R China

[2] China Univ Min & Technol, Sch Sci, Xuzhou 221116, Peoples R China

[3] Wake Forest Univ, Dept Phys, Winston Salem, NC 27109 USA

[4] China Natl Petr Corp, Construct Co, Xuzhou 221008, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2014年 / 30卷 / 04期

关键词：

Bulk metallic glasses; Fracture energy; Strength; Fractal dimension; MEDIUM-RANGE ORDER; MAGNETIC-PROPERTIES; STRUCTURAL MODEL; SURFACES; ALLOY; TEMPERATURE; CHARACTER; GEOMETRY; BEHAVIOR;

D O I：

10.1179/1743284713Y.0000000374

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the strength of brittle bulk metallic glasses (BMGs) was investigated, and a corresponding theoretical model was proposed by modification of Griffith theory using fractal geometry. It was shown that the fracture energy and strength of brittle BMGs not only are related to the plastic zone size, the length scales of atomic order range and the surface energy but also has significant relationship with the fractal dimension in fracture surface. The strength of typical BMGs was also calculated by our improved model, which is in excellent agreement with the experimental data. This study provides a compelling approach for investigating and understanding the high strength of BMGs.

引用

页码：447 / 450

页数：4

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