Application of Barium-bearing Alloys in Steelmaking

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著者

    • MUKAI Kusuhiro
    • Department of Materials Science and Engineering, Faculty of Engineering, Kyushu Institute of Technology
    • HAN Qiyong
    • Department of Materials Science and Engineering, Faculty of Engineering, Kyushu Institute of Technology

抄録

Based on the understanding of the physico-chemical properties of alkaline earth metals, an overview on the investigation of application of Ba-bearing alloys in steel is given in the paper. As calcium it is, barium has a strong affinity for oxygen and sulfur in steel; barium can also modify the inclusions in the steel. The barium-bearing inclusions easily float out from steel. The residual barium-bearing inclusions exist in spherical complex aluminates and randomly distribute in the steel. The mechanical properties such as fatigue, transverse impact toughness and anisotropic properties of steels treated with barium-bearing alloys are improved. The effect of calcium and barium on microstructure of steel is discussed. <br>Some characteristics of production of barium-bearing alloys are also discussed.

収録刊行物

  • ISIJ international  

    ISIJ international 39(7), 625-636, 1999-07-15 

    The Iron and Steel Institute of Japan

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