Universal strain-temperature dependence of dislocation structure evolution in face-centered-cubic metals

P. Landau, G. Makov, R. Z. Shneck, A. Venkert

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The combined effect of strain and temperature on the microstructural evolution of plastically deformed face-centered-cubic (fcc) metals is explored systematically. In particular, the detailed nanoscale, internal structure of dislocation boundaries is determined in pure polycrystalline aluminum, nickel and gold and compared to earlier results in copper. In all the metals studied, dislocations within the boundaries tend to rearrange themselves with increasing strain in the same sequence from tangles into dislocation cells with tangled boundaries, followed by dislocation boundaries consisting of wavy, parallel dislocations and finally into arrays of parallel dislocations. The strain at which rearrangement occurs decreases with increasing temperature. The results are represented by microstructural maps on the strain-temperature plane. The topology of the microstructural maps is found to be similar for all metals studied, suggesting a universal strain-temperature dependence in deformed fcc metals.

Original languageEnglish
Pages (from-to)5342-5350
Number of pages9
JournalActa Materialia
Issue number13
StatePublished - 1 Aug 2011


  • Dislocations
  • Microstructure
  • Plastic deformation
  • Transmission electron microscopy (TEM)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys


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