Shozo Mizoguchi
Tohoku University
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Featured researches published by Shozo Mizoguchi.
Metallurgical transactions. A, Physical metallurgy and materials science | 1986
Yoshiyuki Ueshima; Shozo Mizoguchi; Tooru Matsumiya; Hiroyuki Kajioka
Solute distribution in dendrites during solidification of carbon steel was analyzed by unidirectional solidification experiments and mathematical analysis. The characteristic of the mathematical analysis is that diffusion of solutes in solid and redistribution of solutes at solid/liquid andδ/γ interfaces are taken into consideration. Based on the observed and calculated results, it was found that phosphorus was redistributed fromγ-phase toδ-phase, and that manganese was slightly redistributed fromδ-phase toγ-phase. Therefore the concentrated region of phosphorus can be separated from that of manganese duringδ/γ transformation in the case of slow cooling. Moreover, it was concluded that rapid diffusion inδ-phase and the redistribution duringδ/γ transformation played an important role in the variation of the interdendritic concentrations of solutes with lower carbon concentration.
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 1989
Yoshiyuki Ueshima; Yasushi Sawada; Shozo Mizoguchi; Hiroyuki Kajioka
The precipitation behavior of MnS after solidification was analyzed with low-carbon Fe−Si alloys. This system was chosen since it has a wide temperature range for the δ/γ transformation. Experimental results showed that the amount of MnS precipitates increased drastically between 1300°C and 1100°C, and MnS precipitates were segregated almost entirely in the δ phase. This result was interpreted quantitatively by a mathematical model, taking into account the diffusion and the redistribution of solute elements and also the solubility product limit of Mn and S in both phases. Mathematical analysis shows that the precipitation of MnS starts first in the γ phase, but its growth will be very limited because of slow diffusion of Mn in the γ phase. The effects of some factors such as cooling rate and Si content of alloys on the rate of precipitation were discussed, and the degree of contributions of diffusion of Mn and the redistribution of S were estimated.
Isij International | 1984
Tooru Matsumiya; Hiroyuki Kajioka; Shozo Mizoguchi; Yoshiyuki Ueshima; Hisao Esaka
Isij International | 1996
Masamitsu Wakoh; Takashi Sawai; Shozo Mizoguchi
Isij International | 1990
Shinzo Harada; Shigenori Tanaka; Hideyuki Misumi; Shozo Mizoguchi; Hiroshi Horiguchi
Journal of Crystal Growth | 2002
Kozo Fujiwara; Keiji Nakajima; Toru Ujihara; Noritaka Usami; Gen Sazaki; Hajime Hasegawa; Shozo Mizoguchi; Kazuo Nakajima
Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science | 2001
Sei Kimura; Keiji Nakajima; Shozo Mizoguchi
Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science | 2000
S. E. I. Kimura; Y. Nabeshima; Keiji Nakajima; Shozo Mizoguchi
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2002
Sei Kimura; Keiji Nakajima; Shozo Mizoguchi; H. Hasegawa
Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science | 2003
Keiji Nakajima; Hajime Hasegawa; Sakhob Khumkoa; Shozo Mizoguchi
