Development of one-dimensional periodic packing in metallic glass spheres. (1st March 2020)

• Record Type: Journal Article
• Authors: Zhu, Yiying; Wang, Hao; Wu, Lingkang; Li, Mo
• Is Part Of: Scripta materialia. Number 177(2020)
• Page Start: 132
• Page End: 136
• Publication Date: 2020-03-01
• Subjects: Metallic glasses -- Surface tension -- Nano particles -- Spherical-periodic order; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.10.026
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Metallic glasses are considered as homogeneous and disordered without any long-range atomic packing. Here we report the development of the onion-like layered atomic structure with the one-dimensional spherical periodic order in Cu64 Zr36 metallic glass spheres. The layering transition is driven by the surface tension at all range of temperatures below the glass transition temperature. The ordering depends on the radius of the spheres, ranging from a few atomic layers in the large spheres to fully ordered in the smaller ones. The ordering phenomenon demonstrates the liquid-like behavior in the amorphous solid in nanoscales. Graphical abstract: The one dimensional long-range order developed in a nanosphere of a metallic glassCu64 Zr36 with the radius of 20 nm. The mass densities of the sphere along the radial direction are plotted at different times during the structural revolution. Image, graphical abstract