Melt Flow on Solidified Structures of Middle Carbon Steel by Means of the AC + DC Levitation
The solidified structure of middle carbon steel was examined as a function of the melt flow. The electromagnetic levitation method using the alternating and the static magnetic fields enabled us to change Intensity of the melt flow was continuously changed by changing the static magnetic field. The equiaxed structure was always obtained in the low undercooling region (50K) when the static magnetic field was not imposed. The static magnetic field exceeding 0.8T completely eliminated the formation of the equiaxed structure. The melt flow dominantly contributed to the evolution of the equiaxed structure in the low undercooling region. The relative velocity between the inclusions floating on the melt surface was measured in order to represent the melt flow. When the relative velocity became 0.02m/s, the equiaxed structure was eliminated.
static magnetic field solidified structure equiaxed structure fragmentation of the dendrites levitation
Hideyuki Yasuda Tsutomu Yoshimoto Takuya Mizuguchi Yuki Tamura Takeshi Fukuda Tomoya Nagira Msasato Yoshiya
Department of Adaptive Machine Systems, Osaka University, Suita, Osaka, 565-0871, Japan
国际会议
第十一届中日钢铁技术研讨会(11th China-Japan Symposium on Oron and Steel Technology)
武汉
英文
143-147
2007-10-29（万方平台首次上网日期，不代表论文的发表时间）