Diffusion in fine-grained Al alloys having low and high angle grain boundaries

Takeshi Fujita, Zenji Horita, Terence G. Langdon

    Research output: Contribution to journalConference articlepeer-review

    4 Citations (Scopus)

    Abstract

    Diffusion-couple experiments were conducted on fine-grained alloys in the Al-Mg and Al-Zn systems. It is well known that grain refinement to the submicrometer range is feasible using the process of equal-channel angular pressing (ECAP). In addition, this process can be used also to produce microstructures with predominantly low-angle or high-angle grain boundaries by controlling the shearing direction and the extent of the imposed strain. Alloys having small grain sizes but different misorientation angles were used to make diffusion couples and the interdiffusion coefficients were determined by measuring the concentration profiles across the interfaces. The contribution of grain boundary diffusion to the overall diffusion was evaluated in terms of the alloying elements and the misorientation angles.

    Original languageEnglish
    Pages (from-to)1061-1066
    Number of pages6
    JournalMaterials Science Forum
    Volume396-402
    Issue number2
    DOIs
    Publication statusPublished - Jan 1 2002
    EventAluminium Alloys 2002 Their Physical and Mechnaical Properties: Proceedings of the 8th International Conference ICAA8 - Cambridge, United Kingdom
    Duration: Jul 2 2002Jul 5 2002

    All Science Journal Classification (ASJC) codes

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

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