Tensile fracture criterion of metallic glass
文献类型：期刊论文
| 作者 | R. T. Qu ; J. Eckert ; Z. F. Zhang |
| 刊名 | Journal of Applied Physics
 |
| 出版日期 | 2011 |
| 卷号 | 109期号:8 |
| 关键词 | bulk amorphous-alloys mechanical-properties plastic-flow hydrostatic-pressure shear fracture yield surface ni-fe strength behavior indentation |
| ISSN号 | 0021-8979 |
| 中文摘要 | 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] |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30630]  |
| 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 | R. T. Qu,J. Eckert,Z. F. Zhang. Tensile fracture criterion of metallic glass[J]. Journal of Applied Physics,2011,109(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). |
入库方式： OAI收割
来源：金属研究所
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