| Splitting of fast relaxation in a metallic glass by laser shocks | |
Yang C(杨成)1,2; Duan J(段军)1,2; Ding G(丁淦)1; Bai YJ(白云建)2,3 ; Wei BC(魏炳忱)2,3; Wei YP(魏延鹏)2,4; Liu, SN5; Lan, S5; Zhang, BB6; Shi, CJ6; Dai LH(戴兰宏)1,2; Jiang MQ(蒋敏强)1,2
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| Corresponding Author | Jiang, M. Q.([email protected]) |
| Source Publication | PHYSICAL REVIEW B
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| 2024-01-02 | |
| Volume | 109Issue:2Pages:8 |
| ISSN | 2469-9950 |
| Abstract | 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. |
| DOI | 10.1103/PhysRevB.109.024201 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001175469200001 |
| WOS Keyword | BULK ; REJUVENATION ; DYNAMICS ; BEHAVIOR ; PEAK |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| Funding Project | 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] |
| Funding Organization | 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 |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Jiang, M. Q. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/94778 |
| Collection | 非线性力学国家重点实验室 微重力重点实验室 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China; 4.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 5.Nanjing Univ Sci & Technol, Herbert Gleiter Inst Nanosci, Nanjing, Chin, Myanmar; 6.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China |
| Recommended Citation 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.Rp_Au:Jiang, M. Q. |
| 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. |
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