OCCプロセスにより作製した99.9%アルミニウム鋳造線の組織と結晶方位に及ぼす鋳造速度の影響

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タイトル別名
  • Effect of casting speed on structures and crystal orientation of 99.9% aluminum cast wires produced by OCC process
  • OCC プロセス ニ ヨリ サクセイ シタ 99.9%アルミニウム チュウゾウセン ノ ソシキ ト ケッショウ ホウイ ニ オヨボス チュウゾウ ソクド ノ エイキョウ

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説明

<p>Unidirectional-solidified 99.9% aluminum wires 6 mm in diameter have been produced by a heated-mold continuous casting process (OCC Process) at casting speeds of 0.33–5.0 mm/s. Effect of casting speeds on structures and crystal orientation of the cast wires has been studied by an EBSD technique. It was found that the crystal orientation of all cast wires parallel to the casting direction tended to be [001], the preferred growth orientation of aluminum. At lower casting speed (0.33 mm/s), unidirectional solidified structure wire exhibited single-like crystal morphology with low-angle tilting sub-grain boundaries. In this case, local disorientation angles of the sub-grain boundaries were chiefly distributed near 1 degrees. As the casting speed increased, some of the local disorientation angles of the grain boundaries exceeded 15 degrees. At casting speeds between 0.83–5.0 mm/s, the wires exhibited unidirectional solidified structures containing low-angle and high-angle tilting grain boundaries.</p>

収録刊行物

  • 軽金属

    軽金属 66 (8), 413-418, 2016

    一般社団法人 軽金属学会

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