大ひずみ加工AZ31マグネシウム合金の超塑性変形 Superplasticity of AZ31 magnesium alloy processed by severe plastic deformation

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著者

    • 〓 劼 XING Jie
    • 電気通信大学知能機械工学専攻, 大学院 Graduate, Department of Mechanical Engineering and Intelligent System, The University of Electro-Communications
    • 楊 続躍 YANG Xuyue
    • 電気通信大学知能機械工学専攻 Department of Mechanical Engineering and Intelligent System, The University of Electro-Communications
    • 三浦 博己 [他] MIURA Hiromi
    • 電気通信大学知能機械工学専攻 Department of Mechanical Engineering and Intelligent System, The University of Electro-Communications
    • 酒井 拓 SAKAI Taku
    • 電気通信大学知能機械工学専攻 Department of Mechanical Engineering and Intelligent System, The University of Electro-Communications

抄録

Low temperature superplasticity was studied in a fine-grained magnesium alloy AZ31 which was processed by multi-directional forging (MDF) under decreasing temperature conditions. Tensile specimens were machined from MDFed Mg alloy parallel to the final compression axis. Tensile tests were carried out at temperatures from 393 K to 473 K and at various strain rates. Superplasticity appears even at 393 K with a stress exponent of around 5.6 and a total elongation of 370%. The relative large stress exponent can be connected with grain coarsening or refinement taking place during deformation. The initial texture introduced by MDF hardly changes during deformation. These suggest that grain boundary sliding can take place during superplasticity, while grain rotation hardly occurs.

収録刊行物

  • 軽金属  

    軽金属 56(12), 716-720, 2006-12-30 

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10018660922
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    8623513
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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