Microstructure and mechanical property of dual-directional-extruded Mg alloy AZ31

Liwei Lu, Tianmo Liu, Shan Jiang, Fushen Pan, Qing Liu, Zhongchang Wang

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)


    We report microstructure evolution and mechanical property of Mg alloy AZ31 processed by a new deformation technique, dual-directional extrusion (DDE). Using optical microscopy, scanning electron microscopy, and electron back scatter diffraction technique, we attribute the significant refinement of original coarse grains in the DDE-processed alloy to the occurrence of dynamic recrystallization. Moreover, we find that low temperature is crucial for yielding fine grain, which consequently results in high micro-hardness and yield stress, large fracture strain, and enhanced elongation. The improved mechanical properties are comparable or even superior to those of the alloy subjected to other deformation techniques, rendering the DDE a promising way for further tailoring properties of Mg-based alloys.

    Original languageEnglish
    Pages (from-to)4050-4055
    Number of pages6
    JournalMaterials Science and Engineering A
    Issue number16-17
    Publication statusPublished - 2010 Jun


    • Dual-directional extrusion
    • Dynamic recrystallization
    • Mechanical property
    • Mg alloy AZ31
    • Microstructure

    ASJC Scopus subject areas

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


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