Textures and mechanical properties in rare-earth free quasicrystal reinforced Mg-Zn-Zr alloys prepared by extrusion

S. Ohhashi, A. Kato, M. Demura, A. P. Tsai

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    Microstructure and mechanical properties of quasicrystals dispersed Mg alloys prepared by warm extrusion of the mixtures of Mg and Zn-Mg-Zr quasicrystalline (Qc) powders have been studied. Strong texture oriented along a 1 0 1̄ 0 direction observed in pure Mg was reduced in Qc-dispersed samples, as verified by pole figure method and electron back scattering diffraction. The ultimate tensile strengths at 150 °C for Qc-dispersed extrusions were much higher than 110. MPa for pure Mg, which drastically reached 156. MPa for 15. wt.% Qc by preventing the motion of dislocations. Elongation was improved by the randomization of grain orientation: from 5.7% for pure Mg to 12.9% for 10. wt.% Qc at room temperature; from 15% for pure Mg to 37.1% for 5. wt.% Qc at 150 °C.

    Original languageEnglish
    Pages (from-to)5871-5874
    Number of pages4
    JournalMaterials Science and Engineering A
    Volume528
    Issue number18
    DOIs
    Publication statusPublished - 2011 Jul 15

    Keywords

    • Magnesium extrusion
    • Mechanical property
    • Quasicrystalline
    • Rare-earth free
    • Texture

    ASJC Scopus subject areas

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

    Fingerprint Dive into the research topics of 'Textures and mechanical properties in rare-earth free quasicrystal reinforced Mg-Zn-Zr alloys prepared by extrusion'. Together they form a unique fingerprint.

    Cite this