Inelastic deformation of metallic glasses under dynamic cyclic loading. (15th March 2021)

• Record Type: Journal Article
• Authors: Duan, Y.J.; Qiao, J.C.; Wada, T.; Kato, H.; Wang, Y.J.; Pineda, E.; Crespo, D.
• Is Part Of: Scripta materialia. Number 194(2021)
• Publication Date: 2021-03-15
• Subjects: High-entropy metallic glass -- Flow defects -- Free-volume zones -- Inelastic deformation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.113675
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Dynamic mechanical analysis was performed in two metallic glasses that show markedly distinct β 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. Graphical abstract: Image, graphical abstract