Fracture mechanism of some brittle metallic glasses
文献类型：期刊论文
| 作者 | J. X. Zhao ; R. T. Qu ; F. F. Wu ; Z. F. Zhang ; B. L. Shen ; M. Stoica ; J. Eckert |
| 刊名 | Journal of Applied Physics
 |
| 出版日期 | 2009 |
| 卷号 | 105期号:10 |
| 关键词 | brittle fracture brittleness cobalt alloys cracks elastic waves iron alloys magnesium alloys metallic glasses bulk amorphous-alloys energy-dissipation crack-propagation dynamic fracture instability strength |
| ISSN号 | 0021-8979 |
| 中文摘要 | A systematic study on the fracture surface of brittle Mg-, Fe-, and Co-based metallic glasses under compressive loading is approached and a fracture mechanism is proposed. Experimentally, the metallic glass samples are compressed into many small fragments, displaying an explosion fracture feature. Therefore, an energy equilibrium model is employed to describe the fracture processes of those brittle metallic glasses. Furthermore, some regular nanoscale steps, which were scarcely discovered, are found on the mirror region on their fracture surfaces. It is suggested that such nanoscale steps are associated with the energy distribution in metallic glasses and are created by the shear waves generated by the instability of crack propagation during the explosion rupture processes. Based on the comparison of experimental observations with numerical calculations, we recommend a novel model for interpreting the development of nanoscale steps on the dynamic fracture surfaces of these brittle metallic glasses, which appropriately describes the experimental findings. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32597]  |
| 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 | J. X. Zhao,R. T. Qu,F. F. Wu,et al. Fracture mechanism of some brittle metallic glasses[J]. Journal of Applied Physics,2009,105(10). |
| APA | J. X. Zhao.,R. T. Qu.,F. F. Wu.,Z. F. Zhang.,B. L. Shen.,...&J. Eckert.(2009).Fracture mechanism of some brittle metallic glasses.Journal of Applied Physics,105(10). |
| MLA | J. X. Zhao,et al."Fracture mechanism of some brittle metallic glasses".Journal of Applied Physics 105.10(2009). |
入库方式： OAI收割
来源：金属研究所
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