Mo板の2次再結晶粒成長速度について Growth Rate of Secondary Recrystallized Grain in Molybdenum Sheet

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The growth kinetics of secondary recrystallized grains with specific orientations in the 90% hot rolled molybdenum sheets doped with CaO and MgO were investigated. Specific grains which are developed exclusively during secondary recrystallization in straight-and cross-rolled sheets have two kinds of orientaions with near {112}<111> and {335}<556>, and near {123}<121> and {126}<10, 81> respectively. The activation energies for the growth of secondary recrystallized grains with specific orientations were estimated to be 69-78 kcal/mol in the temperature range 1900-2200°C. The temperature dependence of the grain growth rate G was described by G=3.0×10<SUP>4</SUP> exp (-73000/RT) cm sec<SUP>-1</SUP> for the {112}<111> orientation and G=5.4×10<SUP>3</SUP> exp (-70000/RT)cm sec<SUP>-1</SUP> for the {123}<121> orientation. Moreover, the growth rates of secondary recrystallized grain are closely related to the crystallographic orientation relation between secondary and primary recrystallized grains, and the size of grains obtained for primary recrystallized sheets as results of rolling procedures.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 43(7), 879-884, 1996-07-15

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002012609
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4004688
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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