溶湯直接圧延法によるAl-Cu超塑性合金薄板の製造 Production of Al-Cu superplastic sheets by means of the melt direct rolling

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In order to clarify the possibility of simple and novel process to produce superplastic thin sheet, melt direct rolling of Al–Cu alloys was investigated. Sound strips of Al–6%∼20%Cu alloys were successfully produced from molten state by the melt direct rolling process. 47%∼64% of rolling reduction was applied to the materials during melt direct rolling. Fine θ (Al<sub>2</sub>Cu) particles were distributed in the deformed matrix, though the distribution of θ phase was quite inhomogeneous through thickness location in the melt direct-rolled strips: θ (Cu) concentrated near the surface to show inverse segregation. The Al–Cu melt direct-rolled strips were provided for tensile tests at 520°C. Although elongation of the Al–6%–15%Cu melt direct-rolled strips was not large and hardly depended on strain rate, elongation of the Al–20%Cu strip largely depended on strain rate and showed the maximum value of 354% at a strain rate of 4.2 × 10<sup>−3</sup>s<sup>−1</sup>. At the strain rates where large elongation appeared, the strain rate sensitivity (<i>m</i>-value) reached up to 0.32. It could be concluded that it is possible to produce the supelplastic sheets of Al–20%Cu directly from molten state by means of the melt direct rolling.

収録刊行物

  • 軽金属

    軽金属 49(8), 395-400, 1999-08-30

    The Japan Institute of Light Metals

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    斎藤 好弘 , 辻 伸泰

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各種コード

  • NII論文ID(NAID)
    10002666855
  • 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
    4835122
  • 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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