Optimization of Rolling Conditions in Mg-Al-Ca Alloy Containing Insoluble Second Phase Particles

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Hot rolling was conducted for Mg–6 mass%Al–2 mass%Ca alloy containing insoluble second phase particles and the mechanical properties of the rolled sheets were examined. The alloy used for rolling contained spherical particles with the size of 1.5 μm mainly in the grain boundaries. The amount of edge crack in the rolled sheets decreased at the rolling temperatures above ∼623 K. The highest strength and moderate elongation were obtained when the alloy was rolled at 623 K. The processing conditions for good workability under a given microstructure of the workpiece were considered from a viewpoint of relaxation of stress concentrations at the particle-matrix interface during rolling, and hot working diagrams were constructed. In order to attain good workability under the existence of relatively large second phase particles of 1.5 μm, it is required not only to activate the non-basal slip but also to make use of diffusional relaxation.

収録刊行物

  • Materials transactions  

    Materials transactions 49(6), 1262-1269, 2008-06-01 

    The Japan Institute of Metals and Materials

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各種コード

  • NII論文ID(NAID)
    10021147308
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    9519041
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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