Thermal and mechanical activation of inelastic events in metallic glasses. (1st March 2016)

• Record Type: Journal Article
• Authors: Delogu, Francesco
• Is Part Of: Scripta materialia. Volume 113(2016)
• Page Start: 145
• Page End: 149
• Publication Date: 2016-03-01
• Subjects: Metallic glass -- Molecular dynamics -- Mechanical behavior -- Structural relaxation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.10.026
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: The activation-relaxation technique is used to explore the potential energy landscape of a Cu64 Zr36 metallic glass and to investigate how heating and elastic deformation affect the energy distribution of potential activations. It is shown that heating involves only a few low-energy activations, whereas stress-induced mechanisms are enabled by elastic deformation induce inelastic events over a broader energy range. Observed inelastic events exhibit features similar to those of STZs, which suggests a link between β relaxation and plastic deformation processes. Graphical abstract: