Microstructure and corrosion behavior of AZ31 alloys prepared by dual directional extrusion

Liwei Lu, Tianmo Liu, Jian Chen, Zhongchang Wang

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    Microstructure evolution and corrosion behavior of Mg alloys AZ31 processed by a severe plastic deformation technique, dual directional extrusion (DDE) are reported. The forward extrusion (FE) technique is also taken into account on the AZ31 alloys for comparison. Mean grains for the samples extruded by the DDE are refined significantly with increased extrusion ratio and lowered extrusion temperature, which as a result enhance resistance against salt corrosion. The alloys extruded by the DDE exhibit better corrosion resistance than those by the FE, which is explained by the finer grains, more homogeneous microstructure, and lower density of dislocation in the DDE-ed samples owing to the dynamic recrystallization.

    Original languageEnglish
    Pages (from-to)687-693
    Number of pages7
    JournalMaterials and Design
    Volume36
    DOIs
    Publication statusPublished - 2012 Apr

    Keywords

    • C. Extrusion
    • E. Mechanical
    • F. Microstructure

    ASJC Scopus subject areas

    • Mechanical Engineering
    • Mechanics of Materials
    • Materials Science(all)

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