Observations of grain boundary structure in submicrometer-grained Cu and Ni using high-resolution electron microscopy

Zenji Horita, David Smith, Minoru Nemoto, Ruslan Z. Valiev, Terence G. Langdon

Research output: Contribution to journalArticle

154 Scopus citations

Abstract

Submicrometer-grained (SMG) structures were produced in Cu and Ni using an intense plastic straining technique, and the grain boundaries and their vicinities were observed by high-resolution electron microscopy. The grain boundaries exhibited zigzag configurations with irregular arrangements of facets and steps, and thus they were found to be in a high-energy nonequilibrium state. A similar conclusion was reached earlier for SMG Al-Mg solid solution alloys which have much lower melting points than Cu and Ni, suggesting that nonequilibrium grain boundaries are a typical feature of metals processed by intense plastic straining.

Original languageEnglish (US)
Pages (from-to)446-450
Number of pages5
JournalJournal of Materials Research
Volume13
Issue number2
DOIs
StatePublished - Feb 1998

ASJC Scopus subject areas

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

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