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Stress relaxation in high-entropy Pd20Pt20Cu20Ni20P20 metallic glass: Experiments, modeling and theory

文献类型：期刊论文

作者Duan, YJ4,5; Qiao, JC5; Wada, T3; Kato, H3; Pineda, E4; Crespo, D4; Wang YJ(王云江)1,2
刊名MECHANICS OF MATERIALS
出版日期2021-09-01
卷号160页码:10
ISSN号0167-6636
关键词High-entropy metallic glass Stress relaxation Linear relaxation model Structural heterogeneity Viscoelastic deformation
DOI10.1016/j.mechmat.2021.103959
通讯作者Qiao, J. C.(qjczy@nwpu.edu.cn) ; Wang, Yun-Jiang(yjwang@imech.ac.cn)
英文摘要The viscoelastic properties of Pd20Pt20Cu20Ni20P20 high-entropy metallic glass were probed by dynamic mechanical spectroscopy and stress relaxation. The experimental evolution of stress can be characterized by the empirical Kohlrausch-Williams-Watts function during the tensile stress relaxation measurement. We develop a linear relaxation model able to describe the whole process of stress relaxation in a wide range of temperatures. The linear relaxation model takes into account the microstructural heterogeneity of the glass, and thus its dynamical heterogeneity, so that the thermal effect and stress-driven process are physically decoupled. The activation energy spectra at various temperatures reveal the changes of the deformation units during stress relaxation, which is the result of the interplay between stress and temperature. This study decomposes the widespread hierarchical dynamics due to structural heterogeneity which accommodates the viscoelastic deformation of the high-entropy metallic glasses.
分类号二类
WOS关键词STRUCTURAL RELAXATION ; MECHANICAL RELAXATIONS ; INELASTIC DEFORMATION ; AMORPHOUS PD40NI40P20 ; SECONDARY RELAXATION ; BETA-RELAXATION ; ENERGY SPECTRA ; BULK ; BEHAVIOR ; TRANSITION
资助项目NSFC[12072344] ; Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province[2021JC12] ; MICINN[FIS2017-82625-P] ; Generalitat de Catalunya[2017SGR0042] ; Innovation Foundation for Doctor Disserta-tion of Northwestern Polytechnical University[CX202031] ; China Scholarship Council (CSC)[202006290092] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017025]
WOS研究方向Materials Science ; Mechanics
语种英语
WOS记录号WOS:000683807000003
资助机构NSFC ; Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province ; MICINN ; Generalitat de Catalunya ; Innovation Foundation for Doctor Disserta-tion of Northwestern Polytechnical University ; China Scholarship Council (CSC) ; Youth Innovation Promotion Association of Chinese Academy of Sciences
其他责任者Qiao, J. C. ; Wang, Yun-Jiang
源URL[http://dspace.imech.ac.cn/handle/311007/87239]  
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.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
3.Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan;
4.Univ Politecn Cataluna, Inst Energy Technol, Dept Phys, Barcelona 08019, Spain;
5.Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Peoples R China;
推荐引用方式
GB/T 7714		 Duan, YJ,Qiao, JC,Wada, T,et al. Stress relaxation in high-entropy Pd20Pt20Cu20Ni20P20 metallic glass: Experiments, modeling and theory[J]. MECHANICS OF MATERIALS,2021,160:10.
APA Duan, YJ.,Qiao, JC.,Wada, T.,Kato, H.,Pineda, E.,...&王云江.(2021).Stress relaxation in high-entropy Pd20Pt20Cu20Ni20P20 metallic glass: Experiments, modeling and theory.MECHANICS OF MATERIALS,160,10.
MLA Duan, YJ,et al."Stress relaxation in high-entropy Pd20Pt20Cu20Ni20P20 metallic glass: Experiments, modeling and theory".MECHANICS OF MATERIALS 160(2021):10.

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来源：力学研究所

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