Investigation of refining mechanism in pure Al under pulsed magnetic field

9th International Symposium on Electromagnetic Processing of Materials

材料科学;物理学

Yue, S.P.^1 ; Zheng, Z.L.^1 ; Jie, J.C.^1 ; Guo, Z.K.^1 ; Li, T.J.^1

Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China^1

关键词: Force convections;    Macrostructures;    Numerical investigations;    Pulsed magnetic fields;    Refining mechanisms;    Solidification process;    Solidification structure;    Thermal homogenization;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/424/1/012072/pdf
DOI  :  10.1088/1757-899X/424/1/012072

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The application of pulsed magnetic field can refine the macrostructure of metal effectively in solidification process. This paper presents experimental and numerical investigations on the refining mechanism of PMF on the solidification structure of pure aluminum. Forced convection induced by PMF was applied to the pure Al to investigate its effects on the grain refinement. Experiment results indicated that the forced convection promoted a thermal homogenization in the melt which is beneficial to the survival and growth of the nucleus and resulted in a significant refinement in the pure Al.