Tuning mechanics of metallic glasses via in silico microalloying
文献类型：期刊论文
| 作者 | Kang, Heng5; Ren, Nannan2; Wang YJ(王云江)3,4; Guan, Pengfei1,5 |
| 刊名 | JOURNAL OF NON-CRYSTALLINE SOLIDS
 |
| 出版日期 | 2025-08-01 |
| 卷号 | 661页码:7 |
| 关键词 | Metallic glass Microalloying Mechanical properties Molecular dynamics |
| ISSN号 | 0022-3093 |
| DOI | 10.1016/j.jnoncrysol.2025.123571 |
| 通讯作者 | Wang, Yunjiang(yjwang@imech.ac.cn) ; Guan, Pengfei(pguan@nimte.ac.cn) |
| 英文摘要 | Ductilizing amorphous metals without sacrificing strength is challenging due to unclear plasticity carriers. This study attempts to mimic the microalloying strategy of physical metallurgy in computer simulations by selectively pinning a small fraction of typical atoms in metallic glass, which is targeted to efficiently optimize the mechanical properties. We found that pinning atoms with high participation in the low-frequency vibrational modes are more effective in strengthening, attributing to a mechanism of scale-dependent pinning effect. By pinning only 2 % atoms in the unstable glassy samples, one can achieve shear modulus comparable to samples prepared with cooling rates that are eight orders of magnitude slower, highlighting the validity of microalloying over thermal treatment. Moreover, this microalloying approach not only control elastic properties, but also mitigates the failure mode of metallic glass. It demonstrates that restricting the motion of atoms in regions external to the shear band plays a critical role in inhibiting the propagation of the shear band. |
| 分类号 | 一类 |
| WOS关键词 | TRANSITION ; DUCTILITY ; BEHAVIOR ; BRITTLE ; SIZE |
| 资助项目 | National Natural Science Foundation of China[52201169] ; National Natural Science Foundation of China[T2325004] ; National Natural Science Foundation of China[12088101] ; National Natural Science Foundation of China[12472112] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0620103] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0510301] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001482499600001 |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 其他责任者 | 王云江，Guan, Pengfei |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101196]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn NIMTE, Adv Interdisciplinary Sci Res AIR Ctr, Ningbo 315201, Peoples R China 2.Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243032, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 5.Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Kang, Heng,Ren, Nannan,Wang YJ,et al. Tuning mechanics of metallic glasses via in silico microalloying[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2025,661:7. |
| APA | Kang, Heng,Ren, Nannan,王云江,&Guan, Pengfei.(2025).Tuning mechanics of metallic glasses via in silico microalloying.JOURNAL OF NON-CRYSTALLINE SOLIDS,661,7. |
| MLA | Kang, Heng,et al."Tuning mechanics of metallic glasses via in silico microalloying".JOURNAL OF NON-CRYSTALLINE SOLIDS 661(2025):7. |
入库方式： OAI收割
来源：力学研究所
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