| Tensile fracture criterion of metallic glass; Tensile fracture criterion of metallic glass | |
| R. T. Qu; J. Eckert; Z. F. Zhang | |
| 2011 ; 2011 | |
| 发表期刊 | Journal of Applied Physics
 ; Journal of Applied Physics
|
| ISSN | 0021-8979 ; 0021-8979 |
| 卷号 | 109期号:8 |
| 摘要 | The fracture criterion of metallic glass (MG) is still under debate so far. On the issue of describing the normal stress effect on the tensile fracture behaviors of MGs, there are two fracture criteria: the Mohr-Coulomb (M-C) criterion and the Ellipse criterion. In this study, the normal stress acting on the tensile fracture planes was controlled and varied in a wide range by introducing inclined notches with different inclination angles to a series of Zr-based MG specimens. Based on the experimental results, both the Ellipse criterion and the M-C criterion are compared and analyzed. The experimental results reveal that the Ellipse criterion gives a better prediction than the M-C criterion for the tensile fracture behavior of the investigated Zr-based MG in a wide normal stress range. Moreover, the pressure and normal stress effects were separately considered and some other criteria were further discussed. It is found that under tensile loading, the pressure effect is weak while the normal stress effect is strong. Combined with previously reported results for a variety of MGs, the Ellipse criterion is found to have the capability to describe all the different contributions of the normal stress effect and thus may be suitable as a unified tensile fracture criterion for all MGs with different fracture behaviors. (C) 2011 American Institute of Physics. [doi:10.1063/1.3580285]; The fracture criterion of metallic glass (MG) is still under debate so far. On the issue of describing the normal stress effect on the tensile fracture behaviors of MGs, there are two fracture criteria: the Mohr-Coulomb (M-C) criterion and the Ellipse criterion. In this study, the normal stress acting on the tensile fracture planes was controlled and varied in a wide range by introducing inclined notches with different inclination angles to a series of Zr-based MG specimens. Based on the experimental results, both the Ellipse criterion and the M-C criterion are compared and analyzed. The experimental results reveal that the Ellipse criterion gives a better prediction than the M-C criterion for the tensile fracture behavior of the investigated Zr-based MG in a wide normal stress range. Moreover, the pressure and normal stress effects were separately considered and some other criteria were further discussed. It is found that under tensile loading, the pressure effect is weak while the normal stress effect is strong. Combined with previously reported results for a variety of MGs, the Ellipse criterion is found to have the capability to describe all the different contributions of the normal stress effect and thus may be suitable as a unified tensile fracture criterion for all MGs with different fracture behaviors. (C) 2011 American Institute of Physics. [doi:10.1063/1.3580285] |
| 部门归属 | [qu, r. t.; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [eckert, j.] ifw dresden, inst complex mat, d-01171 dresden, germany.;zhang, zf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;zhfzhang@imr.ac.cn ; [qu, r. t.; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [eckert, j.] ifw dresden, inst complex mat, d-01171 dresden, germany.;zhang, zf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;zhfzhang@imr.ac.cn |
| 关键词 | Bulk Amorphous-alloys Bulk Amorphous-alloys Mechanical-properties Mechanical-properties Plastic-flow Plastic-flow Hydrostatic-pressure Hydrostatic-pressure Shear Fracture Shear Fracture Yield Surface Yield Surface Ni-fe Ni-fe Strength Strength Behavior Behavior Indentation Indentation |
| URL | 查看原文 ; 查看原文 |
| WOS记录号 | WOS:000290047000068 ; WOS:000290047000068 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/30630 |
| 专题 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | R. T. Qu,J. Eckert,Z. F. Zhang. Tensile fracture criterion of metallic glass, Tensile fracture criterion of metallic glass[J]. Journal of Applied Physics, Journal of Applied Physics,2011, 2011,109, 109(8). |
| APA | R. T. Qu,J. Eckert,&Z. F. Zhang.(2011).Tensile fracture criterion of metallic glass.Journal of Applied Physics,109(8). |
| MLA | R. T. Qu,et al."Tensile fracture criterion of metallic glass".Journal of Applied Physics 109.8(2011). |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Tensile fracture cri（3301KB） | 开放获取 | -- | ||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论