1. 1) T. Takahashi, K. Ichikawa, M. Kudou and K. Shimabara : Tetsu-to-Hagané, 61 (1975), 2198.
2. 2) M. C. Flemings, C. A. Adams, E. E. Hucke and H. F. Taylor : Trans. AFS, 64 (1956), 636.
3. 3) H. Esaka, T. Taenaka, H. Ohishi, S. Mizoguchi and H. Kajioka : J. Jpn. Soc. Microgravity Appl., 6 (1989), 20.
4. 4) R. Ichikawa, H. Taniguchi and O. Asai : Z. Metallkd., 71 (1980), 260.
5. 5) M. Moukassi and G. Lesoult : Proc. of 6th Int. Iron and Steel Cong. (6th IISC), ISIJ, Tokyo, (1990), 567.