Influence of rolling on the superplastic behavior of an Al-Mg-Sc alloy after ECAP

Hiroki Akamatsu, Takayoshi Fujinami, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalArticle

125 Citations (Scopus)

Abstract

Equal-channel angular pressing (ECAP) produces an ultrafine grain size and superplastic ductilities at very rapid strain rates in an Al-Mg-Sc alloy. Essentially identical high superplastic elongations are also observed after ECAP plus cold rolling (CR) to form a sheet metal. The elongations remain unchanged because, although the grains become elongated within a banded microstructure in CR and dislocations are introduced within the grains, the boundaries of the ultrafine grains retain their high angles of misorientation. The results confirm that cold rolling after ECAP is an effective procedure for the production of a superplastic sheet metal.

Original languageEnglish
Pages (from-to)759-764
Number of pages6
JournalScripta Materialia
Volume44
Issue number5
DOIs
Publication statusPublished - Mar 26 2001

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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