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Title: Two-zone heterogeneous structure within shear bands of a bulk metallic glass

Shear bands, the main plastic strain carrier in metallic glasses, are severely deformed regions often considered as disordered and featureless. Here we report the observations of a sandwich-like heterogeneous structure inside shear bands in Pd{sub 40.5}Ni{sub 40.5}P{sub 19} metallic glass sample after plastic deformation by high-resolution transmission electron microscopy. The experimental results suggest a two-step plastic deformation mechanism with corresponding microstructure evolution at atomic scale, which may intimately connected to the stability of the shear band propagation and the overall plastic deformability.
Authors:
; ;  [1] ;  [1] ;  [2]
  1. School of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)
  2. (United States)
Publication Date:
OSTI Identifier:
22217893
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 17; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARRIERS; DEFORMATION; EVOLUTION; METALLIC GLASSES; MICROSTRUCTURE; PLASTICITY; PLASTICS; RESOLUTION; SHEAR; STABILITY; STRAINS; TRANSMISSION ELECTRON MICROSCOPY; ZONES