Deciphering theαrelaxation and the anelastic-to-plastic transition in the deep glassy state  

作　　者：Qi Hao Guanghui Xing Eloi Pineda Claudio Fusco Laurent Chazeau Jean-Marc Pelletier Yunjiang Wang Yong Yang Jichao Qiao 

机构地区：[1]School of Mechanics,Civil Engineering and Architecture,Northwestern Polytechnical University,Xi’an,710072,China [2]Department of Physics,Institute of Energy Technologies,Universitat Politècnica de Catalunya,Barcelona,08019,Spain [3]Univ Lyon,INSA Lyon,UniversitéClaude Bernard Lyon 1,CNRS,MATEIS,UMR5510,Villeurbanne,69621,France [4]State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing,100190,China [5]School of Engineering Science,University of Chinese Academy of Sciences,Beijing,100049,China [6]Department of Mechanical Engineering,College of Engineering,City University of Hong Kong,Hong Kong,999077,China [7]Department of Materials Science and Engineering,College of Engineering,City University of Hong Kong,Hong Kong,999077,China [8]State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment,Northwestern Polytechnical University,Xi’an,710072,China [9]Key Laboratory of Aircraft Structural Integrity,Ministry of Industry and Information Technology,Xi’an,710072,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2025年第3期131-138,共8页中国科学:物理学、力学、天文学(英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52271153,and 12472069);the Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province(Grant No.2021JC-12);financially supported by the National Natural Science Foundation of China(Grant No.12472112);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant Nos.XDB0620103,and XDB0510301);financial support from Research Grant Council(RGC);the Hong Kong Government through the General Research Fund(GRF)(Grant Nos.City U11200719,and City U11213118);financial support from Proyecto PID2020-112975GB-I00 de investigación financiado por MCIN/AEI/10.13039/501100011033;Generalitat de Catalunya,AGAUR(Grant No.2021-SGR-00343);supported by the Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University(Grant No.CX2023054)。

摘　　要：In contrast to their conventional crystalline counterparts,amorphous solids exhibit diverse dynamic relaxation mechanisms under external stimuli.The challenge to understanding their behavior lies in unifying microscopic dynamics,relaxation,and macroscopic deformation.This study establishes a potential link by quantifying the characteristic time of the anelastic-to-plastic transition through dynamic mechanical relaxation and stress relaxation tests across a wide temperature range in both the supercooled liquid and the glassy state.It is found that the stress relaxation time in the glassy solids follows an Arrhenius relationship,aligning with the mainαrelaxation time,and unveils a finding:αrelaxation continues to govern deformation even below the glass transition,challenging previous assumptions of the role of secondaryβrelaxation.A hierarchically constrained atomic dynamics model rationalizes the temperature dependence ofαrelaxation and the transition fromβtoαrelaxation,also providing evidence that the stretched exponent in the Kohlrausch-Williams-Watts equation can serve as an order parameter.This work highlights the role ofαrelaxation in the glassy state and contributes to elucidating the potential correlation between relaxation and deformation in amorphous materials.

关 键 词：dynamic relaxation nonelastic deformation metallic glasses AGING 

分 类 号：TG1[金属学及工艺—金属学]