On the stress-state dependent plasticity of brittle metallic glasses: Experiment, theory and simulation

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	On the stress-state dependent plasticity of brittle metallic glasses: Experiment, theory and simulation
	J. X. Zhao; Z. F. Zhang
	2013
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	586 页码:123-132
摘要	In this work, the stress-state dependent plasticity of brittle Ti-based metallic glass was investigated by experiment, mechanics theory and simulation systematically. With different settings of arc-shaped edges, various stress gradients could be generated artificially. The systematical work showed that the global plastic deformability of a metallic glass depended strongly on the stress states under compressive loadings. By introducing the Mohr-Coulomb yielding criterion and the associated flow rule, we proposed an elastic-plastic model to analyze the deformation behaviors of all specimens. Combined with the experimental results and the numerical results by finite element method (FEM), it was demonstrated that the present simulation model could suitably describe the plastic deformation process of the specimens, and the different stress states might have a vital significance on the global plastic deformation behavior. The current results and analytical model could provide an approach to understand the further plastic deformation mechanism of brittle metallic glasses with different stress states. (C) 2013 Elsevier B.V. All rights reserved.
部门归属	[zhao, jiaxi ; zhang, zhefeng] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. ; zhao, jx (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; jxzhao@alum.imr.ac.cn
关键词	Metallic Glass Stress States Shear Bands Global Plasticity Fem Dynamic Compression Shear Bands Mechanical-properties Hydrostatic-pressure Deformation-behavior Fracture Mechanisms Enhanced Plasticity Amorphous-alloys Flow Microstructure
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71711
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. On the stress-state dependent plasticity of brittle metallic glasses: Experiment, theory and simulation[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2013,586:123-132.
APA	J. X. Zhao,&Z. F. Zhang.(2013).On the stress-state dependent plasticity of brittle metallic glasses: Experiment, theory and simulation.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,586,123-132.
MLA	J. X. Zhao,et al."On the stress-state dependent plasticity of brittle metallic glasses: Experiment, theory and simulation".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 586(2013):123-132.