Macroscopic thermoplastic model applied to the high pressure torsion of metallic glasses

Sándor Hóbor, Z. Kovács, Dám Ŕv́sz

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Shear deformation generated temperature rise in metallic glasses is estimated in a macroscopic three-dimensional axial symmetric thermoplastic model. Numerical solution of heat-conduction equation provides the time evolution and spatial distribution of temperature for high pressure torsion in the present paper. We have shown that small sample thickness and/or high deformation rate enables the temperature to exceed the glass transition in the entire sample, yielding a transition of the deformation mode from inhomogeneous to homogeneous viscous flow. However, in other cases only a small temperature increase is predicted in line with literature data.

Original languageEnglish
Article number023531
JournalJournal of Applied Physics
Volume106
Issue number2
DOIs
Publication statusPublished - 2009

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metallic glasses
torsion
temperature
viscous flow
conductive heat transfer
spatial distribution
shear
glass

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Macroscopic thermoplastic model applied to the high pressure torsion of metallic glasses. / Hóbor, Sándor; Kovács, Z.; Ŕv́sz, Dám.

In: Journal of Applied Physics, Vol. 106, No. 2, 023531, 2009.

Research output: Contribution to journalArticle

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