脉冲电流对Al-Si合金缩孔及凝固组织的影响

Influence of Pulse Current on Porosity Infomation and the Solidification Structure in Hypereutectic Al-Si Alloy

在 Al- Si凝固过程中施加脉冲电流 ,可以使合金凝固组织的形貌得到改善 ,晶粒细化。在脉冲压力作用下 ,使凝固后组织中的缩孔缩松减小乃至消除。

The morphology of the Al-Si alloy can be improved and the grained structure would be achieved by using pulse current during the solidification. The porosity in the solidified alloy can be reduced by pulse pressure.