Stages in room temperature torsional deformation of a Vitreloy bulk metallic glass

Mohammed Ezzeldien, Z. Kovács, J. Lendvai, František Chmelík, Kristián Máthis

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Zr44Ti11Cu10Ni10Be25 bulk metallic glass was subjected to torsional deformation at room temperature. Large average strain of about unity was reached in the free-end torsion tests. Based on the evolution of the torque and by analyzing the simultaneously detected acoustic emission, different deformation stages could be identified. In the first stage, the deformation followed the external rotation in a controlled way, then serrations appeared on the torque vs. rotation angle curves in the second stage. Subsequently, the deformation became controlled again in the third stage and it was accompanied by a small strain hardening.

Original languageEnglish
Pages (from-to)25-29
Number of pages5
JournalJournal of Alloys and Compounds
Volume577
DOIs
Publication statusPublished - 2013

Fingerprint

Metallic glass
Torque
Temperature
Acoustic emissions
Strain hardening
Torsional stress

Keywords

  • Acoustic emission
  • Bulk metallic glasses
  • Serrations
  • Shear bands
  • Torsional deformation

ASJC Scopus subject areas

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

Cite this

Stages in room temperature torsional deformation of a Vitreloy bulk metallic glass. / Ezzeldien, Mohammed; Kovács, Z.; Lendvai, J.; Chmelík, František; Máthis, Kristián.

In: Journal of Alloys and Compounds, Vol. 577, 2013, p. 25-29.

Research output: Contribution to journalArticle

Ezzeldien, Mohammed ; Kovács, Z. ; Lendvai, J. ; Chmelík, František ; Máthis, Kristián. / Stages in room temperature torsional deformation of a Vitreloy bulk metallic glass. In: Journal of Alloys and Compounds. 2013 ; Vol. 577. pp. 25-29.
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AU - Máthis, Kristián

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