Evolution of dislocation patterns in fcc metals

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

Research output: Contribution to journalConference articlepeer-review

19 Scopus citations

Abstract

The effect of strain on the microstructure and detailed internal structure of dislocation boundaries in pure polycrystalline fcc metals (aluminum, copper, nickel and gold) was systematically studied and compared as a function of strain following compression at room temperature. At low strains all metals form a cellular structure. The dislocations in the cell walls tend to rearrange themselves from tangles to ordered arrays of parallel dislocations as the strain is increased. However the rearrangement does not correlate well with the stacking fault energy. A good correlation is found with the cross-slip activation energy.

Original languageEnglish
Article number012004
JournalIOP Conference Series: Materials Science and Engineering
Volume3
DOIs
StatePublished - 1 Dec 2009
Event3rd International Conference on the Fundamentals of Plastic Deformation, DISLOCATIONS 2008 - Hong Kong, Hong Kong
Duration: 13 Oct 200817 Oct 2008

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