Comparison of compressive deformation and fracture behaviors of Zr- and Ti-based metallic glasses with notches

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	Comparison of compressive deformation and fracture behaviors of Zr- and Ti-based metallic glasses with notches
	J. X. Zhao; Z. F. Zhang
	2011
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	528 期号:6 页码:2967-2973
摘要	Compressive tests on the Zr- and Ti-based metallic glasses with different notches were investigated to compare their shear fracture mechanism and plastic deformation abilities. It is found that the plasticity of the two metallic glasses can be improved by installing two semicircular symmetrical notches even for the Ti-based metallic glass which has nearly zero compressive plasticity. The enhanced plasticity may be ascribed to the easy initiation of shear bands (SBs) around the notches, and the consequent blocking effect of notches on the propagation of shear bands according to the large-scale stress gradient. Additionally, based on a theoretical model originated from the concept of critical steady shear displacement (CSSD), compared with the sizes of smooth regions on the fracture surface, the plasticity difference of the two different metallic glasses was analyzed quantitatively. The current findings might provide an approach to understand and estimate the difference in the plastic deformation abilities on diverse metallic glasses, as well as the ones with large-scale stress gradient. (C) 2010 Elsevier B.V. All rights reserved.
部门归属	[zhao, j. x.; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;zhao, jx (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;jxzhao@imr.ac.cn zhfzhang@imr.ac.cn
关键词	Metallic Glass Notches Plasticity Shear Band Fracture Ni-cu-be Crack-propagation Amorphous-alloys Shear Fracture Toughness Flow Plasticity Mechanism Ductile
URL	查看原文
WOS记录号	WOS:000287643200098
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30948
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. X. Zhao,Z. F. Zhang. Comparison of compressive deformation and fracture behaviors of Zr- and Ti-based metallic glasses with notches[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2011,528(6):2967-2973.
APA	J. X. Zhao,&Z. F. Zhang.(2011).Comparison of compressive deformation and fracture behaviors of Zr- and Ti-based metallic glasses with notches.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,528(6),2967-2973.
MLA	J. X. Zhao,et al."Comparison of compressive deformation and fracture behaviors of Zr- and Ti-based metallic glasses with notches".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 528.6(2011):2967-2973.