結晶微細化した亜共晶Al-Si-Cu合金の半溶融加圧鋳造組織と機械的性質 Semi-solid solidification structure and mechanical properties of grain-refined hypoeutectic Al-Si-Cu alloy

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Change in the morphology of dendrite primary crystals heated at a temperature of solidification range was examined in hypoeutectic Al–Si–Cu alloys. Dendritic α–Al crystals, which have been refined by the addition of grain refiner, Ti–B and cast into copper mold with the cooling rate more than 10 K/s, are easily spheroidized only by heating to semi-solid state. The size of spheroidized α–Al phases is about 100 μm in diameter under the semi-solid state of fraction solid 0.4 at 860 K. This morphology of α–Al crystals is suitable for the semi-solid squeeze casting. Semi-solid squeeze cast Al–7% Si–3%Cu alloys containing 0.1~1.0%Fe have superior in tensile properties, especially in elongation. The elongation of an as-cast alloy containing 1%Fe is 9%. The tensile properties of semi-solid squeeze cast alloys are further improved by solution heat treatment.

収録刊行物

  • 軽金属

    軽金属 47(11), 620-625, 1997-11-30

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10003796241
  • 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
    4342478
  • 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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