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

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

    Research output: Contribution to journalArticlepeer-review

    154 Citations (Scopus)

    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
    Pages (from-to)446-450
    Number of pages5
    JournalJournal of Materials Research
    Volume13
    Issue number2
    DOIs
    Publication statusPublished - Feb 1998

    All Science Journal Classification (ASJC) codes

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

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