IMECH-IR  > 非线性力学国家重点实验室
Rejuvenation in Hot-Drawn Micrometer Metallic Glassy Wires*
Dong J(董杰)1,2; Feng YH(冯义辉)3; Xun Y(郇勇)3; Yi J4; Wang WH1,2,5; Bai HY1,2,5; Sun BA1,5
Source PublicationCHINESE PHYSICS LETTERS
2020
Volume37Issue:1Pages:4
ISSN0256-307X
Abstract

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.

Keyword71 23 Cq
DOI10.1088/0256-307X/37/1/017103
Indexed BySCI ; CSCD
Language英语
WOS IDWOS:000507867700001
WOS KeywordELASTIC PROPERTIES
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding ProjectNational 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]
Funding OrganizationNational 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
ClassificationQ4
Ranking2
ContributorBai, Hai-Yang
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81317
Collection非线性力学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China;
4.Shanghai Univ, Sch Mat Sci & Engn, Inst Mat, Shanghai 200444, Peoples R China;
5.Songshan Lake Mat Lab, Dongguan 523808, Peoples R China
Recommended Citation
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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