Free volume evolution in metallic glasses subjected to mechanical deformation
文献类型：期刊论文
| 作者 | Li, Qi-Kai; Li, Mo |
| 刊名 | MATERIALS TRANSACTIONS
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 48期号:7页码:1816-1821 |
| 关键词 | Shear Band Metallic Glass Molecular Dynamics Simulation Free Volume |
| ISSN号 | 1345-9678 |
| DOI | 10.2320/matertrans.MJ200785 |
| 英文摘要 | We define the Turnbull-Cohen free volume as the critical excess of the Voronoi volume of an atom less its core volume. Using molecular dynamics simulation we calculated the free volume change in two model binary metallic glasses undergoing tension and shear deformation. We show that the free volume change is an integral part of the deformation process; and the shear localization manifested as a shear band is directly related to the inhomogeneous distribution of the free volumes. Shear band formation may consist of two stages: the initial free volume production in the amorphous solids and the liquefaction of the regions with accumulated deformation strains. We show, for the first time, the formation of voids and the "vein" patterns on fracture surfaces at atomic scales; they are the combined result of the free volume change and loading and sample conditions. |
| 语种 | 英语 |
| WOS记录号 | WOS:000248743100050 |
| 出版者 | JAPAN INST METALS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/61161]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Qi-Kai |
| 作者单位 | 1.Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA 2.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Qi-Kai,Li, Mo. Free volume evolution in metallic glasses subjected to mechanical deformation[J]. MATERIALS TRANSACTIONS,2007,48(7):1816-1821. |
| APA | Li, Qi-Kai,&Li, Mo.(2007).Free volume evolution in metallic glasses subjected to mechanical deformation.MATERIALS TRANSACTIONS,48(7),1816-1821. |
| MLA | Li, Qi-Kai,et al."Free volume evolution in metallic glasses subjected to mechanical deformation".MATERIALS TRANSACTIONS 48.7(2007):1816-1821. |
入库方式： OAI收割
来源：化学研究所
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