Unraveling the threshold stress of structural rejuvenation of metallic glasses via thermo-mechanical creep
文献类型：期刊论文
| 作者 | Ding, Gan2,3; Jiang, Feng3; Song, Xuan1,2 ; Dai, LanHong1,2; Jiang, MinQiang1,2; Dai LH(戴兰宏); Jiang MQ(蒋敏强)
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| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
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| 出版日期 | 2022-06-01 |
| 卷号 | 65期号:6页码:9 |
| ISSN号 | 1674-7348 |
| 关键词 | metallic glass thermo-mechanical creep threshold stress shear transformations rejuvenation-aging boundary |
| DOI | 10.1007/s11433-021-1878-4 |
| 通讯作者 | Jiang, MinQiang(mqjiang@imech.ac.cn) |
| 英文摘要 | The competition between physical aging and structural rejuvenation determines the physical and mechanical properties of glassy materials. Thus, the rejuvenation-aging boundary must be identified quantitatively. In this work, we unravel a stress boundary to distinguish rejuvenation from aging via the thermo-mechanical creep of a typical Zr-based metallic glass. The crept glasses were rejuvenated into high-enthalpy disordered states when the applied stress exceeded a threshold that was numerically close to the steady-state flow stress; otherwise, the glasses were aged. A theoretical model for glass creep was adopted to demystify the observed stress threshold of rejuvenation. The model revealed that the thermo-mechanical creep beyond the threshold stress could activate sufficient shear transformations to create a net free volume, thus leading to structural rejuvenation. Furthermore, we derived the analytical expressions for the threshold and flow stresses. Both stresses can act as the rejuvenation-aging boundary, which is well supported by experimental creep data. The present work procures a deeper understanding of the rejuvenation mechanism of glasses and provides useful implications for abstaining from glass aging. |
| WOS关键词 | SHEAR BANDS ; PLASTICITY ; FLOW ; EXCITATIONS ; RELAXATION ; TRANSITION ; MECHANISM ; EVOLUTION ; DYNAMICS ; BEHAVIOR |
| 资助项目 | National Outstanding Youth Science Fund Project[12125206] ; National Natural Science Foundation of China[11972345] ; National Natural Science Foundation of China[11790292] ; NSFC Basic Science Center for Multiscale Problems in Nonlinear Mechanics[11988102] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000791786400002 |
| 资助机构 | National Outstanding Youth Science Fund Project ; National Natural Science Foundation of China ; NSFC Basic Science Center for Multiscale Problems in Nonlinear Mechanics |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/89060]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Jiang, MinQiang |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 3.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, Gan,Jiang, Feng,Song, Xuan,et al. Unraveling the threshold stress of structural rejuvenation of metallic glasses via thermo-mechanical creep[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2022,65(6):9. |
| APA | Ding, Gan.,Jiang, Feng.,Song, Xuan.,Dai, LanHong.,Jiang, MinQiang.,...&蒋敏强.(2022).Unraveling the threshold stress of structural rejuvenation of metallic glasses via thermo-mechanical creep.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,65(6),9. |
| MLA | Ding, Gan,et al."Unraveling the threshold stress of structural rejuvenation of metallic glasses via thermo-mechanical creep".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 65.6(2022):9. |
入库方式： OAI收割
来源：力学研究所
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