Stability of medium range order in Al-based metallic glass compacted by severe plastic deformation

Z. Kovács, P. Henits, L. Varga, E. Schafler, A. Révész

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

High pressure torsion has successfully been applied to produce low-porosity, bulk specimens from Al-based metallic glass ribbons (Al 85Y8Ni5Co2, Al85Ce 8Ni5Co2 and Al85Gd 8Ni5Co2). The compacted disks possess higher hardness than the original glass and have substantial glass fraction with nanocrystalline precipitations. Mechanical and thermal impacts have only minor effects on the glassy structure as demonstrated by the stability of the X-ray diffraction halo positions. Unchanged halos reveal that medium range order is a key characteristic of the amorphous state.

Original languageEnglish
Pages (from-to)5-9
Number of pages5
JournalJournal of Alloys and Compounds
Volume561
DOIs
Publication statusPublished - Jun 5 2013

Fingerprint

Metallic glass
Plastic deformation
Glass
Torsional stress
Porosity
Hardness
X ray diffraction
Hot Temperature

Keywords

  • Al-based
  • Medium range order
  • Metallic glass
  • Structure

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

Cite this

Stability of medium range order in Al-based metallic glass compacted by severe plastic deformation. / Kovács, Z.; Henits, P.; Varga, L.; Schafler, E.; Révész, A.

In: Journal of Alloys and Compounds, Vol. 561, 05.06.2013, p. 5-9.

Research output: Contribution to journalArticle

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