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The anelastic origin of mechanical cycling induced rejuvenation in the metallic glass

文献类型：期刊论文

作者Zhang, Langting; Wang YJ(王云江); Yang, Yong; Qiao, Jichao
刊名SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
出版日期2023-08-01
卷号66期号:8页码:286111
ISSN号1674-7348
关键词metallic glass mechanical cycling rejuvenation anelastic strain structural heterogeneity 61 43 Dq 62 40 +i 20 Hg
DOI10.1007/s11433-023-2121-2
英文摘要Mechanical cycling is one of the effective methods to rejuvenate metallic glasses (MGs) and improve their mechanical properties. The anelastic origin of the rejuvenation by mechanical cycling in a La30Ce30Ni10Al20Co10 MG was investigated via differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). We demonstrate that mechanical cycling promotes the activation of flow defects with short relaxation times, leading to anelastic strains and therefore considerable energy storage, which manifests itself as larger relaxation enthalpy on the DSC curves of MGs. However, the MGs release the excess relaxation enthalpy caused by anelastic strain with time, thus suppressing atomic mobility and elevating & beta; relaxation activation energies. The strategy of mechanical cycling at small strains, as demonstrated in the current work, can expand the energy states of MGs over a wide range of relaxation enthalpies.
分类号二类/Q1
WOS研究方向Physics
语种英语
WOS记录号WOS:001029222300002
资助机构National Natural Science Foundation of China [51971178, 52271153, cstc2020jcyj-jqX0001] ; Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province [12072344] ; Fundamental Research Funds for the Central Universities [2021JC-12] ; Natural Science Foundation of Chongqing [D5000220034] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Research Grant Council (RGC) ; Hong Kong government through the General Research Fund (GRF) [CityU11200719, CityU11213118]
其他责任者Qiao, JC (corresponding author), Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Peoples R China. ; Qiao, JC (corresponding author), NPU Chongqing, Innovat Ctr, Chongqing, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/92603]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.{Wang, Yunjiang} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
2.{Qiao, Jichao} NPU Chongqing, Innovat Ctr, Chongqing, Peoples R China
3.{Zhang, Langting, Qiao, Jichao} Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Peoples R China
4.{Wang, Yunjiang} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
5.{Yang, Yong} City Univ Hong Kong, Coll Engn, Dept Mech Engn, Hong Kong 999077, Peoples R China
6.{Yang, Yong} City Univ Hong Kong, Coll Engn, Dept Mat Sci & Engn, Hong Kong 999077, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Langting,Wang YJ,Yang, Yong,et al. The anelastic origin of mechanical cycling induced rejuvenation in the metallic glass[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2023,66(8):286111.
APA Zhang, Langting,王云江,Yang, Yong,&Qiao, Jichao.(2023).The anelastic origin of mechanical cycling induced rejuvenation in the metallic glass.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,66(8),286111.
MLA Zhang, Langting,et al."The anelastic origin of mechanical cycling induced rejuvenation in the metallic glass".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 66.8(2023):286111.

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来源：力学研究所

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