The Grain Size and Texture Dependence of Tensile Properties in Extruded Mg-9Al-1Zn

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  • Mabuchi Mamoru
    National Institute of Advanced Industrial Science and Technology
  • Chino Yasumasa
    National Institute of Advanced Industrial Science and Technology
  • Iwasaki Hajime
    College of Engineering, Department of Materials Science and Engineering, Himeji Institute of Technology
  • Aizawa Tatsuhiko
    Research Center for Advanced Science and Technology, The University of Tokyo
  • Higashi Kenji
    College of Engineering, Department of Metallurgy and Materials Science, Osaka Prefecture University

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  • Grain Size and Texture Dependence of Tensile Properties in Extruded Mg 9Al 1Zn

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説明

The tensile properties at room temperature ∼ 573 K of Mg–9Al–1Zn processed by normal extrusion were compared with those processed by equal channel angular (ECA) extrusion. The strength at room temperature was strongly affected by the grain size. However, the effect of the grain size rapidly decreased with testing temperature. At room temperature, the normal extruded alloy showed the stronger grain size dependence of 0.2% proof stress than the ECA extruded alloy because of the microscopic orientation effect. Also, the grain size dependence was reduced when grain boundaries were in a non-equilibrium state.

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