Size- and stability-dependent fracture scaling in nanoscale metallic glass
文献类型：期刊论文
| 作者 | Sun, Lechuan4; Zhang, Shan5; Su, Rui2; Wang YJ(王云江)1,3; Guan, Pengfei4,5 |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2025-06-15 |
| 卷号 | 292页码:8 |
| 关键词 | Metallic glass Nanowires Size effect Fracture modes Thermal stability |
| ISSN号 | 1359-6454 |
| DOI | 10.1016/j.actamat.2025.121046 |
| 通讯作者 | Wang, Yunjiang(yjwang@imech.ac.cn) ; Guan, Pengfei(pguan@nimte.ac.cn) |
| 英文摘要 | Experiments show a significant size effect in the fracture modes of the metallic glass (MG) nanowires, while simulations often diverge due to differences in thermal histories caused by timescale issue of the classical molecular dynamics quenching methods. This leads to disparities between computational and experimental results. To address this, we used a hybrid molecular dynamics (MD) and Monte Carlo thermal cycling method to fabricate well-annealed MG nanowires with effective quenching rates significantly lower than those of MD-prepared samples. Our findings reveal that fracture mode transitions are strongly tied to thermal history. For high quenching rate samples, the fracture mode is only dictated by the aspect ratio (L/D) of nanowires, aligning with existing simulations. For low quenching rate samples, the critical factor determining fracture is the diameter (D), matching experimental observations. This resolves the discrepancies between simulations and experiments on size-dependent fractures in nanoscale MGs. Microscopic analysis links this variation to the intrinsic plastic zone width (delta 0), influenced by the aspect ratio in high rates but correlated solely with diameter in low rates. We propose a universal model for fracture scaling with size and thermal stability in nanostructured MGs. |
| 分类号 | 一类 |
| WOS关键词 | MECHANICAL-BEHAVIOR ; UNIAXIAL TENSION ; ASPECT RATIO ; BULK ; DEFORMATION ; STRENGTH ; TRANSITION ; THICKNESS ; BRITTLE ; NECKING |
| 资助项目 | National Natural Science Foundation of China[52161160330] ; National Natural Science Foundation of China[T2325004] ; National Natural Science Foundation of China[12472112] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0510301] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0620103] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001473605000001 |
| 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/311007/101115]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China 2.Hangzhou Dianzi Univ, Inst Adv Magnet Mat, Coll Mat & Environm Engn, Hangzhou 310018, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China; 5.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Sun, Lechuan,Zhang, Shan,Su, Rui,et al. Size- and stability-dependent fracture scaling in nanoscale metallic glass[J]. ACTA MATERIALIA,2025,292:8. |
| APA | Sun, Lechuan,Zhang, Shan,Su, Rui,王云江,&Guan, Pengfei.(2025).Size- and stability-dependent fracture scaling in nanoscale metallic glass.ACTA MATERIALIA,292,8. |
| MLA | Sun, Lechuan,et al."Size- and stability-dependent fracture scaling in nanoscale metallic glass".ACTA MATERIALIA 292(2025):8. |
入库方式： OAI收割
来源：力学研究所
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