Plastic zone at crack tip: A nanolab for formation and study of metallic glassy nanostructures

被引：19

作者：

Xia, Xing-Xiang ^{[1
]}

Wang, Wei-Hua ^{[1
]}

Greer, A. Lindsay ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

[2] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

来源：

JOURNAL OF MATERIALS RESEARCH | 2009年 / 24卷 / 09期

基金：

美国国家科学基金会;

关键词：

FRACTURE-TOUGHNESS; TENSILE DUCTILITY; TEMPERATURE;

D O I：

10.1557/JMR.2009.0362

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report that various metallic glassy nanostructures including nanoridges, nanocones, nanowires, nanospheres, and nanoscale-striped patterns are spontaneously formed on the fracture surface of bulk metallic glasses at room temperature. A clear correlation between the dimensions of these nanostructures and the size of the plastic zone at the crack tip has been found, providing a way to control nanostructure sizes by controlling the plastic zone size intrinsically or extrinsically. This approach to forming metallic glassy nanostructures also has implications for understanding the deformation and fracture mechanisms of metallic glasses.

引用

页码：2986 / 2992

页数：7

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