郭敬東1， 原正興3，水 麗3，周本濂1
(1. 中國科學(xué)院金屬研究所， 沈陽 110015;
2. 沈陽師范學(xué)院 物理系， 沈陽 110031;
3. 沈陽工業(yè)學(xué)院 材料系， 沈陽 110006)
摘 要: 在砂型鑄造ZA27合金的凝固過程中用脈沖電流進(jìn)行處理，結(jié)果表明這種處理方法可以提高鑄件的致密性，大大減少鑄件中的縮孔和疏松。脈沖電流處理后鑄件密度增加2.5%。電流對鑄件中縮孔的分布也有影響。
關(guān)鍵字: 脈沖電流； ZA27合金； 縮孔；疏松
and porosity in casting ZA27 alloy
YUAN Zheng-xing3， SHUI Li3
（1. Institute of Metal Research， Chinese Academy of
Sciences， Shenyang 110015, P.R.China;
2. Department of Physics， Shenyang Normal College，
Shenyang 110031, P.R.China;
3. Department of Material Science， Shenyang Institute of
Technology, Shenyang110015, P.R.China）
Abstract:The ZA27 alloy cast in a sand mould was treated with electric current pulse (EP)during the solidification. The experiment result indicates that the treatment of the electric current can apparently reduce the shrinkage cavity and the porosity. The density of the casting after treating with EP increases by 2.5% than that before EP. The current pulse applied in the solidification can also affect the distribution of the defects in the casting.
Key words: electric current pulse；ZA27 alloy；shrinkage cavity；porosit
