Characterization on morphology evolution of primary phase in semisolid A356under slightly electromagnetic stirring

摘要：

The effects of slight electromagnetic stirring on morphology of primary phase in semisolid A356 prepared by low superheat pouring and slight electromagnetic stirring were researched, and some characteristic parameters characterized the morphology and grain size of the primary phase were calculated. The results indicate that the stirring power has an important effect on the morphology and the grain size. The characteristics of the morphology could be characterized by the fractal dimensions and the shape factors. The fractal dimension and the shape factor change when the morphology changes with processing conditions. Both increase with the increase of the stirring power, but the fractal dimension is still affected by the grain size. The increase of stirring power could obviously improve the grain size,fractal dimension and shape factor of the primary phase.

关键词： semisolid A356 primary phase morphology fractal dimension stirring power

作者: LIU Zheng MAO Wei-min LIU Xiao-mei

作者单位: Faculty of Mechanical and Electronic Engineering, Jiangxi University of Science and Technology,Ganzh School of Material of Science and Engineering, University of Science and Technology Beijing,Beijing Faculty of Mechanical and Electronic Engineering, Jiangxi University of Science and Technology,Ganzh

会议类型: 国际会议

会议名称: The 11th International Conference on Semi-Solid Processing of Alloy and Composites(第11届合金与复合材料半固态成形国际会议)

会议地点: 北京

会议语种:英文

页码: 805-810

在线出版日期: 2010-09-16（万方平台首次上网日期，不代表论文的发表时间）