Splitting of fast relaxation in a metallic glass by laser shocks
文献类型：期刊论文
| 作者 | Yang C(杨成)5,6; Duan J(段军)5,6; Ding G(丁淦)6; Bai YJ(白云建)4,5 ; Wei BC(魏炳忱)4,5; Wei YP(魏延鹏)3,5; Liu, SN2; Lan, S2; Zhang, BB1; Shi, CJ1
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| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2024-01-02 |
| 卷号 | 109期号:2页码:8 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.109.024201 |
| 通讯作者 | Jiang, M. Q.(mqjiang@imech.ac.cn) |
| 英文摘要 | Fast relaxation, a locally dynamic activation, universally occurs in metallic glasses below room temperature. Despite much attention, its structural origin has barely been solved and remains mysterious. In this work, the dynamic mechanical relaxations of a typical Zr-based metallic glass with different structural states are systematically studied from 135 to 748 K. We find that the single -peak (beta') fast relaxation in the annealed glass splits into two distinct peaks (gamma and beta') by multiple -pulse laser shocks, and this dynamics splitting will vanish after re -annealing. Slight structural rejuvenation of the laser -shocked sample is detected by thermodynamic measurements. Structural characterizations further reveal that the laser shocks lead to an increase in the edgesharing medium -range orders (MROs), which is then recovered by re -annealing. The one-to-one changes in relaxation dynamics and atomic structures provide convincing evidence that the fast relaxation originates from the excitation of MRO structures, and its splitting is due to the reconstruction of MROs. We also find that the split fast relaxations contribute to the room -temperature plasticity of the studied glasses. |
| 分类号 | 二类 |
| WOS关键词 | BULK ; REJUVENATION ; DYNAMICS ; BEHAVIOR ; PEAK |
| 资助项目 | National Outstanding Youth Science Fund Project[12125206] ; NSFC[11972345] ; CAS Project for Young Scientists in Basic Research[YSBR-096] ; National Key Basic Research Program of China[2020YFA0406101] ; Basic Science Center for Multiscale Problems in Nonlinear Mechanics[11988102] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001175469200001 |
| 资助机构 | National Outstanding Youth Science Fund Project ; NSFC ; CAS Project for Young Scientists in Basic Research ; National Key Basic Research Program of China ; Basic Science Center for Multiscale Problems in Nonlinear Mechanics |
| 其他责任者 | Jiang, M. Q. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/94777]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 力学研究所_国家微重力实验室 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China 2.Nanjing Univ Sci & Technol, Herbert Gleiter Inst Nanosci, Nanjing, Chin, Myanmar; 3.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 4.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China; 5.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China; 6.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Yang C,Duan J,Ding G,et al. Splitting of fast relaxation in a metallic glass by laser shocks[J]. PHYSICAL REVIEW B,2024,109(2):8. |
| APA | 杨成.,段军.,丁淦.,白云建.,魏炳忱.,...&蒋敏强.(2024).Splitting of fast relaxation in a metallic glass by laser shocks.PHYSICAL REVIEW B,109(2),8. |
| MLA | 杨成,et al."Splitting of fast relaxation in a metallic glass by laser shocks".PHYSICAL REVIEW B 109.2(2024):8. |
入库方式： OAI收割
来源：力学研究所
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