强脉冲电流对铸造ZA27合金性能的影响  

EFFECT OF STRONG ELECTRIC CURRENT PULSE ON THE PROPERTIES OF CASTING ZA27 ALLOY

作　　者：高明[1] 何冠虎[1] 杨菲[1] 郭敬东[1] 原正兴[2] 水丽[2] 周本廉[1] 

机构地区：[1]中国科学院金属研究所 [2]沈阳工业学院

出　　处：《材料研究学报》2002年第1期74-76,共3页Chinese Journal of Materials Research

基　　金：国家自然科学基金重点资助项目59889101.

摘　　要：在砂型铸造ＺＡ２７合金的凝固过程中施加强脉冲电流，测量了得到的试样的力学性能．结果表明，脉冲电流可明显抑制ＺＡ２７合金中枝状晶的长大，提高合金的抗拉强度及延伸率．The ZA27 alloy cast in the sand mould was treated with strong electric current pulse (ECP) during the solidification. The results show that the tensile strength and the elongation of specimens treated with ECP are higher than that of the untreated specimens, the dendrite grain of the ZA27 alloy treated with ECP become smaller than that untreated. The treatment of the electric current pulse can restraint the dendrite growth in the alloy and consequently enhance the tensile strength and the elongation.

关 键 词：铸造 性能 脉冲电流 ZA27合金 抗拉强度 延伸率 凝固 

分 类 号：TG111.4[金属学及工艺—物理冶金] TG113.2[金属学及工艺—金属学]