| Reformation Capability of Short-Range Order and Their Medium-Range Connections Regulates Deformability of Bulk Metallic Glasses | |
Li, Congling1,2; Wei, Yujie1 ; Shi, Xinghua1; Shi, XH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
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| Source Publication | SCIENTIFIC REPORTS
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| 2015-07-16 | |
| Volume | 5Pages:12177 |
| ISSN | 2045-2322 |
| Abstract | Metallic glasses (MGs) typically have high yield strength while low ductility, and the latter is commonly considered as the Achilles' heel of MGs. Elucidate the mechanism for such low ductility becomes the research focus of this field. With molecular level simulations, we show the degree of short-range order (SRO) of atomic structure for brittle Fe-based glass decreases dramatically during the stretch, while mild change occurs in ductile Zr-based glass. The reformation capability for SRO and their medium-range connections is found to be the primary characteristics to differentiate the deformability between the two metallic glasses. We suspect that, in addition to the strength of networks formed by SRO structure, the reformation capability to reform SRO networks also plays the key role in regulating the ductility in metallic glasses. Our study provides important insights into the understanding about the mechanisms accounting for ductility or brittleness of bulk metallic glasses.; Metallic glasses (MGs) typically have high yield strength while low ductility, and the latter is commonly considered as the Achilles' heel of MGs. Elucidate the mechanism for such low ductility becomes the research focus of this field. With molecular level simulations, we show the degree of short-range order (SRO) of atomic structure for brittle Fe-based glass decreases dramatically during the stretch, while mild change occurs in ductile Zr-based glass. The reformation capability for SRO and their medium-range connections is found to be the primary characteristics to differentiate the deformability between the two metallic glasses. We suspect that, in addition to the strength of networks formed by SRO structure, the reformation capability to reform SRO networks also plays the key role in regulating the ductility in metallic glasses. Our study provides important insights into the understanding about the mechanisms accounting for ductility or brittleness of bulk metallic glasses. |
| Subject Area | Science & Technology - Other Topics |
| DOI | 10.1038/srep12177 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000358008100001 |
| WOS Keyword | MOLECULAR-DYNAMICS ; DEFORMATION ; FLOW ; PLASTICITY ; BEHAVIOR ; FRACTURE ; DUCTILE ; SOLIDS ; MODEL |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| Funding Organization | National Natural Science Foundation of China (NSFC) [11023001, 11425211] |
| Department | LNM微结构计算力学（筹） |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/55332 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Shi, XH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China 2.Luoyang Inst Sci & Technol, Sch Civil Engn, Luoyang 471023, Henan Province, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Congling,Wei, Yujie,Shi, Xinghua,et al. Reformation Capability of Short-Range Order and Their Medium-Range Connections Regulates Deformability of Bulk Metallic Glasses[J]. SCIENTIFIC REPORTS,2015,5:12177. |
| APA | Li, Congling,Wei, Yujie,Shi, Xinghua,&Shi, XH .(2015).Reformation Capability of Short-Range Order and Their Medium-Range Connections Regulates Deformability of Bulk Metallic Glasses.SCIENTIFIC REPORTS,5,12177. |
| MLA | Li, Congling,et al."Reformation Capability of Short-Range Order and Their Medium-Range Connections Regulates Deformability of Bulk Metallic Glasses".SCIENTIFIC REPORTS 5(2015):12177. |
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| IMCAS-J2015-143.pdf（2529KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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