skip to main content

SciTech ConnectSciTech Connect

Title: Shear avalanches in metallic glasses under nanoindentation: Deformation units and rate dependent strain burst cut-off

Indented metallic glasses at the nanoscale deform via strain bursts. Conventional continuum descriptions are not appropriate for such highly stochastic, intermittent deformations. In this study, after a statistical analysis of strain bursts in five metallic glasses, the dependence of the cut-off of the strain burst size on deformation units and loading rate is established. For soft metallic glasses with smaller deformation units, cut-off of the strain burst size truncates the scale-free behavior at larger strain burst sizes. For hard metallic glasses, scale-free behavior occurs in a wide range of strain burst sizes.
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Laboratory for Microstructures, Shanghai University, Shanghai 200444 (China)
  2. Department of Industrial and System Engineering, the Hongkong Polytechnic University, Kowloon, Hong Kong (Hong Kong)
  3. School of Mathematics and Statistics, Zhengzhou University, Zhengzhou 450001 (China)
Publication Date:
OSTI Identifier:
22217924
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 10; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 36 MATERIALS SCIENCE; GLASS; LOADING RATE; METALLIC GLASSES; NANOSTRUCTURES; SHEAR; STOCHASTIC PROCESSES; STRAINS