| Mechanical Relaxation-to-Rejuvenation Transition in a Zr-based Bulk Metallic Glass | |
Zhang M(张猛); Wang YM; Li FX; Jiang SQ; Li MZ ; Liu L; Liu, L (reprint author), Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Peoples R China.
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| Source Publication | SCIENTIFIC REPORTS
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| 2017-04-04 | |
| Volume | 7 |
| ISSN | 2045-2322 |
| Abstract | The relaxation of amorphous materials i.e. aging would largely endanger their performances in service. Here we report a mechanical relaxation-to-rejuvenation transition of a Zr35Ti30Be27.Cu-5(7.5) bulk metallic glass (BMG) in elastostatic compression at ambient temperature thus provide an accessible way to tailor the mechanical properties of amorphous materials. To unravel the structural evolution underlying the observed transition atomistic simulations parallel with the experimental tests on a typical model glass system Zr60Cu40 were performed which successfully reproduced and thus upheld the experimentally observed mechanical relaxation-to-rejuvenation transition. The variations of coordination number and atomic volume during the transition are evaluated to indicate a de-mixing tendency of the constituent atoms in the rejuvenation stage. This de-mixing tendency largely explains the difference between mechanical rejuvenation and thermal rejuvenation and reveals a competitive relationship between activation enthalpy and activation entropy in the stress-driven temperatureassisted atomic dynamics of BMG such as diffusion and plastic deformation etc. |
| DOI | 10.1038/s41598-017-00768-7 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000398162600001 |
| WOS Keyword | AMORPHOUS-ALLOYS ; ELASTOSTATIC COMPRESSION ; STRUCTURAL RELAXATION ; SUPERCOOLED LIQUIDS ; TEMPERATURE ; FLOW ; DEFORMATION ; DYNAMICS ; BEHAVIOR |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| Funding Organization | National Nature Science Foundation of China(51531003 ; MOST 973 Program(2015CB856801) ; 51471074) |
| Department | LNM冲击动力学与新型材料力学性能 |
| Classification | 一类 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/60560 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Liu, L (reprint author), Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Peoples R China. |
| Recommended Citation GB/T 7714 | Zhang M,Wang YM,Li FX,et al. Mechanical Relaxation-to-Rejuvenation Transition in a Zr-based Bulk Metallic Glass[J]. SCIENTIFIC REPORTS,2017,7. |
| APA | 张猛.,Wang YM.,Li FX.,Jiang SQ.,Li MZ.,...&Liu, L .(2017).Mechanical Relaxation-to-Rejuvenation Transition in a Zr-based Bulk Metallic Glass.SCIENTIFIC REPORTS,7. |
| MLA | 张猛,et al."Mechanical Relaxation-to-Rejuvenation Transition in a Zr-based Bulk Metallic Glass".SCIENTIFIC REPORTS 7(2017). |
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| JouAr-2017-053.pdf（4108KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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