工業用純アルミニウムにおけるFeの析出挙動のモデル化 Modelling of precipitation behavior of Fe in commercial purity aluminum

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Microstructure and precipitation control for optimizing processing conditions is vitally important for improvement of quality of wrought aluminum alloys. In this study, a model was presented for the precipitation behavior of impurity Fe and Si in commercial purity aluminum. The model was basically constructed under the nucleation and growth theory. The equilibrium stability and solvus temperature of precipitates and equilibrium solvus boundaries of Fe and Si in solid solution were determined by thermodynamic calculation for Al–Fe–Si alloys. The temperature–time-precipitation (TTP) curves for Al<sub>3</sub>Fe and α-AlFeSi were mainly described in this paper. In addition, as the effects of strain-induced precipitation, a stored energy term was added to the rate of heterogeneous nucleation, in which the effects of recovery and recrystallization were taken into account.<br>As an experimental verification of this model, the changes in solute Fe contents during isothermal annealing in the un-deformed and hot-deformed specimens were quantitatively investigated by chemical analysis of extracted residue with phenol (phenol residue method). The present model quantitatively explained the experimental results, in particular, concerning TTP curves and the accelerated precipitation due to strain.

収録刊行物

  • 軽金属

    軽金属 54(7), 273-279, 2004-07-30

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10013341745
  • 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
    7047682
  • 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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