Microstructural evolution and deformation behaviour of wrought Mg–Al–Zn alloys under dynamic compression

L. Lu, J. Zhao, L. Liu, Z. Wang

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    We perform dynamic compression to extruded AZ31 Mg alloys both along and perpendicular to the extrusion direction (ED) at a high strain rate of 1400 s−1 using split Hopkison pressure bar, and study the microstructure, texture evolution and mechanical anisotropy. We find that the temperature and loading direction play an important role in affecting microstructure evolution and flow stress. The mechanical anisotropy, yield strength and hardening ability are found to decrease with the rise of temperature. Moreover, the grains are also found to be refined remarkably, and the strong basal texture is weakened substantially owing to the dynamic recrystallisation especially in the case where dynamic compression is carried out perpendicular to the ED at 473 K.

    Original languageEnglish
    Pages (from-to)955-962
    Number of pages8
    JournalMaterials Science and Technology (United Kingdom)
    Volume32
    Issue number10
    DOIs
    Publication statusPublished - 2016 Jul 2

    Keywords

    • Dynamic compression
    • Grain refinement
    • Magnesium alloy
    • Mechanical anisotropy
    • Texture evolution

    ASJC Scopus subject areas

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

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