Critical Oxygen Concentration for the Formation of CO Macroblowholes during Constant Rate Solidification of Iron

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  • 鉄の定速凝固時のCOマクロ気孔生成の臨界酸素濃度
  • テツ ノ テイソク ギョウコジ ノ CO マクロ キコウ セイセイ ノ リンカ

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Abstract

The iron containing 0.050.15%C was solidified unidirectionally at a constant rate of 5 mm/min to obtain the critical oxygen concentration for CO macroblowhole formation. This concentration is represented not by a curved line but by a band. At 0.05 %C a large scatter is shown in the critical oxygen concentration. Additionally experiments were done for the ceasing of growth of CO blowholes. It is clarified that the critical oxygen concentration of blowhole formation is higher than that of blowhole growth ceasing.

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 70 (3), 442-444, 1984

    The Iron and Steel Institute of Japan

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