浇注温度对脉冲磁致振荡细化纯铝凝固组织的影响

Effect of Pouring Temperature on Solidification Structure of Pure AI under Pulse Magneto-Oscillation

采用自制脉冲电源,研究脉冲磁致振荡(pulse magneto-oscillation,PMO)对纯铝凝固组织的作用效果,考察浇注温度对纯铝凝固组织细化的影响.实验结果表明,低的浇注温度有利于铸锭中形成适合晶核生存的温度场,增加晶核存活数量,从而改善铸锭的细化效果.

Using a home-buih electric pulse power, the refinement effects of pulse magneto-oscillation （PMO） on the solidification structure of pure aluminum were investigated under various pouting temperatures. The results show that low pouring temperature is beneficial in obtaining the right temperature field for the survival of nuclei and increasing the number of nuclei, resulting in a better refining effect.