Severe plastic deformation of amorphous alloys

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3 Citations (Scopus)

Abstract

Bulk metallic glasses having a disordered amorphous structure have been in the focus of recent intensive materials research due to their special mechanical properties, however, these materials exhibit brittleness in conventional unconstrained deformation modes. High-pressure torsion as a special severe plastic deformation method, which applies constraints on the material, can induce significant plasticity in metallic glasses. Apart, the deformation can promote structural changes in the glass, such as anisotropy and nanocrystallization. The inhomogeneity generated by torsional shear deformation in bulk metallic glasses can be detected in internal surfaces. The final structure and morphology of the deformed material depend on the processing parameters (deformation rate, shear strain, temperature and pressure) of the high-pressure torsion apparatus.

Original languageEnglish
Pages (from-to)1283-1293
Number of pages11
JournalMaterials Transactions
Volume60
Issue number7
DOIs
Publication statusPublished - Jan 1 2019

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Keywords

  • Amorphous
  • Bulk metallic glass
  • Glass forming ability
  • High-pressure torsion
  • Severe plastic deformation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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