Study on effect of pulsed magnetic field period on solidification structure based on multifractal method
CAO Shengli1，ZHANG Qingjun1,2，ZHU Liguang2，YAN Chunliang1
(1. Analysis and Testing Center, North China University of Science and Technology, Tangshan 063210, Hebei, China;
2. Hebei Province High Quality Steel Continuous Casting Engineering Technology Research Center, College of
Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China)
Abstract：In order to study the effect of pulsed magnetic field on solidification structure, the pulsed magnetic field was applied to the solidification process of titanium treated low carbon steel by a spontaneously developed noncontact pulsed magnetic field generating device, and the influence of pulsed magnetic field under different periods on the solidification structure was studied using a metallographic microscope and multifractal software designed by the laboratory. The results showed that the solidification structure of this steel had fractal characteristics. With the extension of the pulsed magnetic field cycle, Δα and Δf(α) appeared to decrease first and then increase, and the texture was most uniform when the pulsed magnetic field period was 0.5 s. Therefore, it can be concluded that there is an optimal value for the effect of the pulsed magnetic field period on the solidification structure.
曹胜利，张庆军，朱立光，严春亮. 基于多重分形研究脉冲磁场周期对凝固组织的影响[J]. 中国冶金, 2019, 29(4): 31-37.
CAO Shengli，ZHANG Qingjun，ZHU Liguang，YAN Chunliang. Study on effect of pulsed magnetic field period on solidification structure based on multifractal method[J]. China Metallurgy, 2019, 29(4): 31-37.
2019, Vol. 29 
