An investigation of ductility and microstructural evolution in an Al-3% Mg alloy with submicron grain size

Jingtao Wang, Zenji Horita, Minoru Furukawa, Minoru Nemoto

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    205 Citations (Scopus)

    Abstract

    A submicrometer-grained (SMG) A1-3% Mg solid solution alloy, with an initial grain size of ~0.2 μm was produced by intense plastic straining. Experiments show that tensile specimens of the SMG alloy exhibit high elongations to failure at low testing strain rates at the relatively low temperature of 403 K. The stress exponent is high (~7-8) and calculations show deformation is within the region of power-law breakdown. The initial microstructure of the alloy consists of diffuse boundaries between highly deformed grains. At strain rates of ~10-4 s-1 and lower, plastic deformation leads to dynamic recrystallization and the formation of highly nonequilibrium grain boundaries that gradually evolve into a more equilibrated configuration.

    Original languageEnglish
    Pages (from-to)2810-2818
    Number of pages9
    JournalJournal of Materials Research
    Volume8
    Issue number11
    DOIs
    Publication statusPublished - Nov 1993

    All Science Journal Classification (ASJC) codes

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

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