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Title: Mapping strain fields induced in Zr-based bulk metallic glasses during in-situ nanoindentation by X-ray nanodiffraction

A pioneer in-situ synchrotron X-ray nanodiffraction approach for characterization and visualization of strain fields induced by nanoindentation in amorphous materials is introduced. In-situ nanoindentation experiments were performed in transmission mode using a monochromatic and highly focused sub-micron X-ray beam on 40 μm thick Zr-based bulk metallic glass under two loading conditions. Spatially resolved X-ray diffraction scans in the deformed volume of Zr-based bulk metallic glass covering an area of 40 × 40 μm{sup 2} beneath the pyramidal indenter revealed two-dimensional map of elastic strains. The largest value of compressive elastic strain calculated from diffraction data at 1 N load was −0.65%. The region of high elastic compressive strains (<−0.3%) is located beneath the indenter tip and has radius of 7 μm.
Authors:
; ;  [1] ; ; ;  [2] ;  [3] ;  [4] ;  [2] ;  [5]
  1. DESY, Notkestraße 85, Hamburg 22547 (Germany)
  2. Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Mechanics of Materials and Nanostructures, Feuerwerkerstraße 39, Thun 3602 (Switzerland)
  3. Institute of Physics ASCR, Na Slovance 2, Praha 18221 (Czech Republic)
  4. HZG, Institut für Werkstoffforschung, Notkestraße 85, Hamburg 22547 (Germany)
  5. (Switzerland)
Publication Date:
OSTI Identifier:
22489317
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 108; Journal Issue: 3; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; METALLIC GLASSES; MONOCHROMATIC RADIATION; STRAINS; SYNCHROTRON RADIATION; TRANSMISSION; X RADIATION; X-RAY DIFFRACTION