Inelastic deformation of metallic glasses under dynamic cyclic loading

被引：11

作者：

Duan, Y. J. ^{[1
,2
]}

Qiao, J. C. ^{[1
]}

Wada, T. ^{[3
]}

Kato, H. ^{[3
]}

Wang, Y. J. ^{[4
,5
]}

Pineda, E. ^{[2
]}

Crespo, D. ^{[2
]}

机构：

[1] Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Peoples R China

[2] Univ Politecn Cataluna, Inst Energy Technol, Dept Phys, Barcelona 08019, Spain

[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[4] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China

[5] Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China

来源：

SCRIPTA MATERIALIA | 2021年 / 194卷

关键词：

High-entropy metallic glass; Flow defects; Free-volume zones; Inelastic deformation;

D O I：

10.1016/j.scriptamat.2020.113675

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dynamic mechanical analysis was performed in two metallic glasses that show markedly distinct beta relaxation features. The confined flow defects of free-volume zones and the inelastic deformation behavior result into a significant mechanical hysteresis loop in dynamic cyclic loadings, which is described with a viscoelastic model. Annealing below the glass transition temperature T-g decreases the concentration of free-volume zones. The understanding of the inelastic deformation, which is related to free-volume zones, is critical and may provide a new avenue into the mechanical properties' improvement of high entropy metallic glasses. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

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