Fracture morphology pattern transition dominated by the crack tip curvature radius in brittle metallic glasses
文献类型：期刊论文
| 作者 | Gao, M ; Ding, DW ; Zhao, DQ ; Bai, HY ; Wang, WH |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2014 |
| 卷号 | 617页码:89 |
| 关键词 | Metallic glasses Fracture morphology evolution Crack tip curvature radius Shear transformation zone |
| ISSN号 | 0921-5093 |
| 通讯作者 | Wang, WH (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | The dynamic evolutions of different fracture morphologies in the fracture surface of brittle Mg-based metallic glasses (MGs) were systematically and quantitatively studied by SEM and AFM. It shows that the evolution of the fracture morphology pattern is dominated by an effective dynamic parameter of critical crack tip curvature radius. Based on crack tip plastic zone and shear transformation zone (STZ) theories, a theoretical model for the evolution of the crack tip curvature radius by considering the activation of STZs during fracture was proposed. The model can simulate the crack propagation process, and predict the critical crack tip curvature radius and the fracture pattern transition between the dimples and the periodic corrugations solely occurring in brittle MGs. These results have implications for understanding the microscopic fracture mechanism and the structural origin of fracture in MGs. (C) 2014 Elsevier B.V. All rights reserved. |
| 资助信息 | National Natural Science Foundation of China [50921091, 51301194] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59319]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Gao, M,Ding, DW,Zhao, DQ,et al. Fracture morphology pattern transition dominated by the crack tip curvature radius in brittle metallic glasses[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2014,617:89. |
| APA | Gao, M,Ding, DW,Zhao, DQ,Bai, HY,&Wang, WH.(2014).Fracture morphology pattern transition dominated by the crack tip curvature radius in brittle metallic glasses.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,617,89. |
| MLA | Gao, M,et al."Fracture morphology pattern transition dominated by the crack tip curvature radius in brittle metallic glasses".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 617(2014):89. |
入库方式： OAI收割
来源：物理研究所
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