脉冲电流作用下纯铝宏观凝固组织的变化

Solidified Aluminum Macrostructure with Pulse Electric Current

采用高压电容器为储能装置的脉冲电源 ,在不同的参数下 ,对纯铝液进行脉冲电流处理。实验结果表明 :脉冲电流能够细化金属的凝固组织 ,使粗大柱状晶变成细小等轴晶。脉冲电流参数不同 ,对金属凝固组织的细化效果明显不同。

By using pulse electrical source with high-tension storage capacitance, effects of pulse electrical currents on solidification macrostructure of Pure Aluminum is studied under different charge voltages. The results show that pulse electric current can refine solidification macrostructure of the metal, and macrostructure is transformed from bulky columnar grain to fine equiaxed grain. Corresponding, the effects of different parameters of pulse electrical current are different on the results.