| Strain-hardening under uniaxial tension in a rejuvenated bulk metallic glass | |
| Zhou, W. H.1,2; Panagiotopoulos, N. T.3; Greer, A. L.3; Li, Y.1 | |
| Corresponding Author | Greer, A. L.(alg13@cam.ac.uk) ; Li, Y.(liyi@imr.ac.cn) |
| 2022-04-15 | |
| Source Publication | SCRIPTA MATERIALIA
 |
| ISSN | 1359-6462 |
| Volume | 212Pages:5 |
| Abstract | A rejuvenated Zr-based bulk metallic glass is tested in tension: it shows strain-hardening and reaches 0.9% plastic strain at failure. The initial rate of increase of flow stress with strain is 73 GPa, much higher than normal for polycrystalline metals and alloys. This hardening rate and its decay with increasing strain are compared with published data on a representative range of conventional and novel alloys. Taking the onset of necking as failure, and using Considere's analysis, we conclude that the metallic glass, however much rejuvenated, is limited to tensile plastic strains of approximately 1%, because of the rapid decay of hardening rate with strain. Rejuvenation of the metallic glass blocks early catastrophic failure in a predominant shear orientation. In comparison with as-cast samples, the fracture surface of the rejuvenated sample is more rugged and the characteristic vein pattern is denser. The effects of rejuvenation on abrasive-wear behavior are also examined. (c) 2022 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Metallic glass Work-hardening Ductility Fracture Tensile testing |
| Funding Organization | European Research Council ; Shenyang National Laboratory for Materials Science |
| DOI | 10.1016/j.scriptamat.2022.114572 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | European Research Council[ERC-2015-AdG-695487] ; Shenyang National Laboratory for Materials Science |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000790970200008 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173912 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Greer, A. L.; Li, Y. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England |
| Recommended Citation GB/T 7714 | Zhou, W. H.,Panagiotopoulos, N. T.,Greer, A. L.,et al. Strain-hardening under uniaxial tension in a rejuvenated bulk metallic glass[J]. SCRIPTA MATERIALIA,2022,212:5. |
| APA | Zhou, W. H.,Panagiotopoulos, N. T.,Greer, A. L.,&Li, Y..(2022).Strain-hardening under uniaxial tension in a rejuvenated bulk metallic glass.SCRIPTA MATERIALIA,212,5. |
| MLA | Zhou, W. H.,et al."Strain-hardening under uniaxial tension in a rejuvenated bulk metallic glass".SCRIPTA MATERIALIA 212(2022):5. |
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