Microstructural stability of Cu processed by different routes of severe plastic deformation

J. Gubicza, S. V. Dobatkin, E. Khosravi, A. A. Kuznetsov, J. Lábár

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

The thermal stability of ultrafine-grained (UFG) microstructure in Cu processed by different routes of severe plastic deformation (SPD) was studied at both high and room temperatures (RT). It was found that the microstructures produced by multi-directional forging or twist extrusion were more stable than those obtained by equal-channel angular pressing (ECAP) or high-pressure torsion (HPT). During storage of the ECAP-processed specimen at RT for 4 years the vacancy concentration reduced significantly while the dislocation density and the crystallite size remained unchanged. In the case of the HPT-processed sample both grain-growth and reduction of the dislocation density were observed.

Original languageEnglish
Pages (from-to)1828-1832
Number of pages5
JournalMaterials Science and Engineering A
Volume528
Issue number3
DOIs
Publication statusPublished - Jan 25 2011

Fingerprint

Equal channel angular pressing
pressing
Torsional stress
plastic deformation
torsion
Plastic deformation
routes
microstructure
Microstructure
forging
room temperature
Crystallite size
Forging
Dislocations (crystals)
Grain growth
Vacancies
Extrusion
Thermodynamic stability
thermal stability
Temperature

Keywords

  • Aging
  • Dislocations
  • Equal channel angular processing
  • High-pressure torsion
  • Nanostructured materials

ASJC Scopus subject areas

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

Cite this

Microstructural stability of Cu processed by different routes of severe plastic deformation. / Gubicza, J.; Dobatkin, S. V.; Khosravi, E.; Kuznetsov, A. A.; Lábár, J.

In: Materials Science and Engineering A, Vol. 528, No. 3, 25.01.2011, p. 1828-1832.

Research output: Contribution to journalArticle

Gubicza, J. ; Dobatkin, S. V. ; Khosravi, E. ; Kuznetsov, A. A. ; Lábár, J. / Microstructural stability of Cu processed by different routes of severe plastic deformation. In: Materials Science and Engineering A. 2011 ; Vol. 528, No. 3. pp. 1828-1832.
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