上面開放加熱鋳型式連続鋳造法によるアルミニウム板の一方向凝固組織と結晶方位

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タイトル別名
  • Directionally solidified structures and crystal orientations of aluminum strips cast continuously with an open type, heated horizontal mold.
  • ジョウメン カイホウ カネツ イガタシキ レンゾク チュウゾウホウ ニ ヨル アルミニウムバン ノ 1ホウコウ ギョウコ ソシキ ト ケッショウ ホウイ

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Cast 99.7 mass% aluminum strips were produced using the open type, heated mold continuous casting (Ohno Strip Casting) process at casting speeds of 1.7, 5.0 and 8.3 mm/s. The effects of casting speed on the solidified structures and crystal orientations of the strips were investigated. All strips were constituted macroscopically of unidirectionally solidified structures and microscopically of aligned primary and secondary cell grains extending parallel to the casting direction. At the starting end, the crystal orientation of the strip parallel to the casting direction was distributed from [001] to [011]. At 1400 mm away from the starting end, particularly at slow casting speed (1.7 mm/s), the crystal orientations of the strip tended to be [001], It was found that all primary cell grains had mixed boundary which consisted of tilt and twist angles. As the casting speed of the strips increased, tilt and twist angles of the primary cell grains increased. Higher casting speed also resulted in primary cell grain growth parallel to the casting direction with some slight twisting.

収録刊行物

  • 軽金属

    軽金属 49 (11), 542-547, 1999

    一般社団法人 軽金属学会

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