Monitoring of self-annealing in ultrafine-grained silver using nanoindentation

Jeno Gubicza, Nguyen Q. Chinh, Terence G. Langdon

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The self-annealing of an ultrafine-grained (UFG) microstructure in pure silver produced by severe plastic deformation (SPD) was studied by nanoindentation and X-ray line profile analysis. Both recovery and recrystallization of the UFG structure take place during long-term storage at room temperature as a result of the extremely high dislocation density which acts as a driving force in selfannealing. Nanohardness mapping revealed that self-annealing occurred inhomogeneously, and the higher strain imposed in SPD processing leads to faster recrystallization in severely deformed silver. This behavior of self-annealing can be explained by the enhanced contribution of twinning which facilitates the formation of recrystallized embryos.

Original languageEnglish
Pages (from-to)294-297
Number of pages4
JournalNanoscience and Nanotechnology Letters
Volume2
Issue number4
DOIs
Publication statusPublished - Dec 1 2010

Keywords

  • Equal-channel anpressing
  • Nanoindentation
  • Recovery
  • Recrystallization
  • Severe plastic deformation
  • Ultrafine-grained materials

ASJC Scopus subject areas

  • Materials Science(all)

Fingerprint Dive into the research topics of 'Monitoring of self-annealing in ultrafine-grained silver using nanoindentation'. Together they form a unique fingerprint.

  • Cite this