Smaller Deborah number inducing more serrated plastic flow of metallic glass
文献类型：期刊论文
| 作者 | Jiang MQ(蒋敏强) ; Jiang SY(江思跃); Ling Z(凌中); Dai LH(戴兰宏)
|
| 刊名 | Computational Materials Science
 |
| 出版日期 | 2009 |
| 卷号 | 46页码:767-771 |
| 通讯作者邮箱 | lhdai@lnm.imech.ac.cn |
| 关键词 | Metallic glasses Indentation Flow serration Simulation Deborah number |
| ISSN号 | 0927-0256 |
| 通讯作者 | Dai LH (戴兰宏) |
| 合作状况 | 其它 |
| 中文摘要 | Spherical nano-indentations of Cu46Zr54 bulk metallic glass (BMG) model systems were performed using molecular dynamics (MD) computer simulations, focusing specifically on the physical origin of serrated plastic flow. The results demonstrate that there is a direct correlation between macroscopic flow serration and underlying irreversible rearrangement of atoms, which is strongly dependent on the loading (strain) rate and the temperature. The serrated plastic flow is, therefore, determined by the magnitude of such irreversible rearrangement that is inhomogeneous temporally. A dimensionless Deborah number is introduced to characterize the effects of strain rate and temperature on serrations. Our simulations are shown to compare favorably with the available experimental observations. |
| 学科主题 | 新型材料的力学问题 |
| 类目[WOS] | Materials Science, Multidisciplinary |
| 研究领域[WOS] | Materials Science |
| 关键词[WOS] | SHEAR BANDS ; MOLECULAR-DYNAMICS ; AMORPHOUS METALS ; NANOINDENTATION ; DEFORMATION ; ALLOYS ; INDENTATION ; SIMULATION ; DEPENDENCE ; BEHAVIOR |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000270346300041 |
| 公开日期 | 2009-12-04 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/28687]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Jiang MQ,Jiang SY,Ling Z,et al. Smaller Deborah number inducing more serrated plastic flow of metallic glass[J]. Computational Materials Science,2009,46:767-771. |
| APA | 蒋敏强,江思跃,凌中,&戴兰宏.(2009).Smaller Deborah number inducing more serrated plastic flow of metallic glass.Computational Materials Science,46,767-771. |
| MLA | 蒋敏强,et al."Smaller Deborah number inducing more serrated plastic flow of metallic glass".Computational Materials Science 46(2009):767-771. |
入库方式： OAI收割
来源：力学研究所
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