Correlating dynamic relaxation and viscoelasticity in metallic glasses  

作　　者：GuangHui Xing Qi Hao Fan Zhu Yun-Jiang Wang Yong Yang Hidemi Kato Eloi Pineda Si Lan JiChao Qiao 

机构地区：[1]School of Mechanics,Civil Engineering and Architecture,Northwestern Polytechnical University,Xi'an 710072,China [2]State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China [3]School of Engineering Science,University of Chinese Academy of Sciences,Beijing 100049,China [4]Department of Mechanical Engineering,College of Engineering,City University of Hong Kong,Hong Kong 999077,China [5]Department of Materials Science and Engineering,College of Engineering,City University of Hong Kong,Hong Kong 999077,China [6]Institute for Materials Research,Tohoku University,Sendai 980-8577,Japan [7]Department of Physics,Institute of Energy Technologies,Universitat Politècnica de Catalunya,Barceona 9,Spain [8]School of Material Science and Engineering,Herbert Gleiter Institute of Nanoscience,Nanjing University of Science and Technology.Nanjing 210094,China [9]State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment,Northwestern Polytechnical University,Xi'an 710072,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2024年第5期81-90,共10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.51971178,and 52271153);the Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province(Grant No.2021JC-12);the Fundamental Research Funds for the Central Universities(Grant No.D5000220034);the support from the National Natural Science Foundation of China(Grant No.12072344);the support from the research project PID2020-112975GB-I00 funded by MCIN/AEI/10.13039/501100011033;Generalitat de Catalunya,AGAUR(Grant No.2021SGR00343);the partial support from the Natural Science Foundation of China(Grant No.52222104)。

摘　　要：Relaxation dynamics,essential for the structural evolution of non-equilibrium systems like glassy materials,remain enigmatic.Here,we explore relaxation dynamics and viscoelastic properties in three types of metallic glasses with distinctβrelaxation behavior.In systems with significantβrelaxation,stress relaxation and creep experiments reveal a transition from two-step to one-step relaxation with rising temperature.However,such a phenomenon is absent in systems with weakerβrelaxation.We model the two-step relaxation process using a double Kohlrausch-Williams-Watts equation,and the obtained relaxation times elegantly adhere to the Arrhenius relationship.By combining fitted activation energies with theoretical analysis,we conclusively attribute these relaxation processes toβrelaxation andαrelaxation,respectively.Finally,we analyze the relaxation time spectra of two processes and establish a comprehensive picture linking dynamic relaxation with viscoelasticity.Our study provides new strategies for probing the complex relaxation behaviors of glasses from the perspective of viscoelasticity.

关 键 词：CREEP RELAXATION GLASSES 

分 类 号：TG139.8[一般工业技术—材料科学与工程] O341[金属学及工艺—合金]