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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
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Structure Analyses of Fe-based Metallic Glasses by Electron Diffraction.

Akihiko Hirata1, Yoshihiko Hirotsu2

  • 1WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan. hirotsu@osaka-u-groningen.org.

Materials (Basel, Switzerland)
|September 9, 2017
PubMed
Summary
This summary is machine-generated.

Nanoscale electron diffraction and energy-filtered imaging reveal amorphous structures. These techniques explore Fe-based metallic glasses, linking their structure to glass stability.

Keywords:
local atomic structuremetallic glassnanobeam electron diffractionpair distribution function analysis

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Characterizing amorphous structures at the nanoscale is challenging.
  • Traditional methods provide limited information on local atomic arrangements.
  • Understanding amorphous materials is crucial for developing advanced alloys.

Purpose of the Study:

  • To demonstrate the application of advanced electron microscopy techniques for amorphous materials.
  • To investigate the structure-property relationship in Fe-based metallic glasses.
  • To correlate nanoscale structural features with glass stability.

Main Methods:

  • Utilizing nanobeam electron diffraction (NBED) for nanoscale structural analysis.
  • Employing high-resolution imaging for visualizing atomic arrangements.
  • Performing energy-filtered transmission electron microscopy (EFTEM) for radial distribution function (RDF) analysis.

Main Results:

  • NBED and high-resolution imaging provide detailed nanoscale structural insights.
  • EFTEM-based RDF analysis accurately characterizes averaged amorphous structures.
  • Specific structural features in Fe-based metallic glasses were identified.

Conclusions:

  • Nanoscale electron diffraction and imaging are powerful tools for amorphous materials.
  • A correlation between nanoscale structure and enhanced glass stability in Fe-based metallic glasses was established.
  • These findings advance the understanding and design of metallic glasses.