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Title: Structural features of plastic deformation in bulk metallic glasses

Spatially resolved strain maps of a plastically deformed bulk metallic glass (BMG) have been created by using high-energy X-ray diffraction. The results reveal that plastic deformation creates a spatially heterogeneous atomic arrangement, consisting of strong compressive and tensile strain fields. In addition, significant shear strain is introduced in the samples. The analysis of the eigenvalues and eigenvectors of the strain tensor indicates that considerable structural anisotropy occurs in both the magnitude and direction of the strain. These features are in contrast to the behavior observed in elastically deformed BMGs and represent a distinctive structural sign of plastic deformation in metallic glasses.
Authors:
; ; ;  [1] ; ; ;  [1] ;  [2] ;  [3]
  1. IFW Dresden, Institut für Komplexe Materialien, D-01069 Dresden (Germany)
  2. (Germany)
  3. European Synchrotron Radiation Facilities ESRF, BP220, 38043 Grenoble (France)
Publication Date:
OSTI Identifier:
22415131
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; EIGENVECTORS; METALLIC GLASSES; PLASTICITY; STRAINS; TENSORS; X-RAY DIFFRACTION