Effect of the Melt Flow on the Solidified Structure of Middle Carbon Steel by Means of the Levitation Method Using Alternating and Static Magnetic Fields
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概要
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Effect of melt flow on the solidified structure of middle carbon steel was examined by a levitation method using alternating and static magnetic fields. In this study, solidification in the lower undercooling region (less than 70 K) was studied. As the static magnetic field increased, the melt flow in the levitated melt was continuously reduced. Portion of the equiaxed structure in the solidified structure also decreased with decreasing the melt flow velocity. The equiaxed structure was not observed when a static magnetic field exceeding 0.8 T was imposed during solidification. Average of the relative velocity, which was defined from motion between the inclusions for representing the melt flow velocity, was reduced to be approximately 0.01 m/s at a magnetic field of 0.8 T. The present results showed that fragmentation of the dendrite arms could be suppressed when the flow velocity in the melt was reduced to be in the order of 10−3 m/s.
- 社団法人 日本鉄鋼協会の論文
- 2007-04-15
著者
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安田 秀幸
大阪大学大学院工学研究科
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NAGIRA Tomoya
Department of Materials Science and Processing, Graduate School of Engineering, Osaka University
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YASUDA Hideyuki
Department of Adaptive Machine Systems, Osaka University
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TAMURA Yuki
Osaka University
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TAMURA Yuki
Department of Adaptive Machine Systems, Osaka University
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Nagira Tomoya
Department Of Adaptive Machine System Osaka University
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Nagira Tomoya
Department Of Adaptive Machine Systems Osaka University
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Yasuda Hideyuki
Department Of Adaptive Machine System Osaka University
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YOSHIMOTO Tsutomu
Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University
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MIZUGUCHI Takuya
Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University
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YOSHIYA Masato
Department of Adaptive Machine Systems, Osaka University
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Tamura Yuki
Department Of Adaptive Machine Systems Graduate School Of Engineering Osaka University
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Yoshiya Masato
Department Of Adaptive Machine Systems Osaka University
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Mizuguchi Takuya
Department Of Adaptive Machine Systems Graduate School Of Engineering Osaka University
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Yoshimoto Tsutomu
Department Of Adaptive Machine Systems Graduate School Of Engineering Osaka University
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Yoshiya Masato
Dep. Of Adaptive Machine Systems Graduate School Of Engineering Osaka Univ.
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Yasuda Hideyuki
Dep. Of Adaptive Machine Systems Graduate School Of Engineering Osaka Univ.
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Yoshiya Masato
Department Of Adaptive Machine Systems Graduate School Of Engineering Osaka University
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安田 秀幸
大阪大学大学院工学研究科知能・機能創成工学専攻
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Nagira Tomoya
Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University
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