Effects of Superposed Field on Solidification Microstructure of Al-7wt%Si Alloy
In this paper, the effect of superposition of rotating electromagnetic field and triangular pulse electric field on the microstructure of the cast Al-7wt％Si hypoeutectic alloy was investigated. The experimental results showed that solidification microstructure of Al-7wt％Si hypoeutectic alloy could be obviously improved from dendrites to nearly equiaxed grain with increasing the voltage of rotating electromagnetic field and α－Al dendrites were refined by superposed field. Moreover, refinement effects were further improved with increasing intensity of the superposed field.
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Z. H. Wang et al., "Effects of Superposed Field on Solidification Microstructure of Al-7wt%Si Alloy", Advanced Materials Research, Vols. 189-193, pp. 3999-4002, 2011