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
	2010
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	527 期号:23 页码:6224-6229
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.
部门归属	[zhao, j. x.; wu, f. f.; zhang, z. f.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [wu, f. f.] liaoning univ technol, sch mat sci & engn, jinzhou 121001, peoples r china.;zhang, zf (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;zhfzhang@imr.ac.cn
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
URL	查看原文
WOS记录号	WOS:000281264000015
引用统计	被引频次：10[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/321006/31743
专题	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.