Analysis on shear deformation mechanism of metallic glass under confined bending test

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	Analysis on shear deformation mechanism of metallic glass under confined bending test
	J. X. Zhao ; F. F. Wu ; Z. F. Zhang
刊名	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
	2010
卷号	527 期号:23 页码:6224-6229
关键词	Metallic glasses Confined bending test Plastic deformation Shear bands bulk amorphous-alloys fracture mechanisms melt extraction aspect ratio si-b plasticity behavior band composites plates
ISSN号	0921-5093
中文摘要	The shear deformation mechanism of Zr-based metallic glass under multiaxial loadings was systematically analyzed. By means of a confined bending test (CBT), some regular shear bands (SBs) initiated on the tension surface of the specimen and the metallic glass showed certain plastic deformation ability due to the stable propagation of SBs. Moreover, the angles between most of the SBs and the edges of the specimen were measured to be 55 degrees approximately. In order to reveal the shear deformation mechanism under the CBT, a nonlinear contact analytical model based on the finite element method (FEM) was proposed. Furthermore, according to the stress results obtained by simulations, a stress analysis method was employed to establish the relationship between the SB angle and the shear deformation process. Finally, compared with the experimental results above, it was concluded that the stress gradient produced by CBT was the key factor which could stimulate certain plasticity. Additionally, the initiation and propagation of the SBs were stable due to the multiaxial stress state in specimen. (C) 2010 Elsevier B.V. All rights reserved.
原文出处	://WOS:000281264000015
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31743]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	J. X. Zhao,F. F. Wu,Z. F. Zhang. Analysis on shear deformation mechanism of metallic glass under confined bending test[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(23):6224-6229.
APA	J. X. Zhao,F. F. Wu,&Z. F. Zhang.(2010).Analysis on shear deformation mechanism of metallic glass under confined bending test.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(23),6224-6229.
MLA	J. X. Zhao,et al."Analysis on shear deformation mechanism of metallic glass under confined bending test".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.23(2010):6224-6229.