Rejuvenation in Hot-Drawn Micrometer Metallic Glassy Wires* | |
Dong J(董杰)4,5; Feng YH(冯义辉)1; Xun Y(郇勇)1; Yi J3; Wang WH2,4,5; Bai HY2,4,5; Sun BA2,5 | |
刊名 | CHINESE PHYSICS LETTERS |
2020 | |
卷号 | 37期号:1页码:4 |
关键词 | 71 23 Cq |
ISSN号 | 0256-307X |
DOI | 10.1088/0256-307X/37/1/017103 |
英文摘要 | We report an enhanced rejuvenation in hot-drawn micrometer metallic glassy wires (MG wires) with the size reduction. Compared to metallic glasses (MGs) in bulk form, the modulus and hardness for the micro-scale MG wires, tested by nanoindentation methods, are much lower and decrease with the decreasing size, with a maximum decrease of similar to 26% in modulus and similar to 17% in hardness. This pronounced rejuvenation is evidenced by the larger sub-T-g relaxation enthalpy of the MG wires. The pronounced rejuvenation is physically related to the higher energy state induced by a combined effect of severely thermomechanical shearing and freezing the shear flow into a constrained small-volume region. Our results reveal that the internal states and properties of MGs can be dramatically changed by a proper modulation of temperature, flow stress and size. |
分类号 | Q4 |
资助项目 | National Key Research and Development Program of China[2018YFA0703603] ; National Key Research and Development Program of China[2017YFB0903902] ; National Key Research and Development Program of China[2016YFB0300501] ; National Natural Science Foundation of China[51822107] ; National Natural Science Foundation of China[11790291] ; National Natural Science Foundation of China[51671121] ; National Natural Science Foundation of China[51761135125] ; National Natural Science Foundation of Guangdong Province[2019B030302010] ; Key Research Program of Frontier Sciences[QYZDY-SSW-JSC017] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB30000000] |
WOS关键词 | ELASTIC PROPERTIES |
WOS研究方向 | Physics |
语种 | 英语 |
WOS记录号 | WOS:000507867700001 |
资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of Guangdong Province ; Key Research Program of Frontier Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences |
其他责任者 | Bai, Hai-Yang |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/81316] |
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, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China; 2.Songshan Lake Mat Lab, Dongguan 523808, Peoples R China 3.Shanghai Univ, Sch Mat Sci & Engn, Inst Mat, Shanghai 200444, Peoples R China; 4.Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China; 5.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China; |
推荐引用方式 GB/T 7714 | Dong J,Feng YH,Xun Y,et al. Rejuvenation in Hot-Drawn Micrometer Metallic Glassy Wires*[J]. CHINESE PHYSICS LETTERS,2020,37(1):4. |
APA | Dong J.,Feng YH.,Xun Y.,Yi J.,Wang WH.,...&Sun BA.(2020).Rejuvenation in Hot-Drawn Micrometer Metallic Glassy Wires*.CHINESE PHYSICS LETTERS,37(1),4. |
MLA | Dong J,et al."Rejuvenation in Hot-Drawn Micrometer Metallic Glassy Wires*".CHINESE PHYSICS LETTERS 37.1(2020):4. |
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