稀土Ce对Al4.5Cu合金性能的影响
Effect of Rare Earth Cerium on Properties of Al4.5Cu Alloy
应建中1, 谢世坤1, 易荣喜1, 张庭芳2
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作者单位：1. 井冈山大学 工学院, 江西 吉安 343009; 2 . 南昌大学 机电工程学院, 江西 南昌 330029
中文关键字：Al4.5Cu合金； 稀土Ce； 体积收缩； 微观组织； 斜坡浇注
英文关键字：Al4.5Cu alloy; rare earth cerium; volume shrinkage; microstructure; pouring slope
中文摘要：研究了稀土Ce对Al4.5Cu合金微观组织、凝固区间和凝固过程体积变化的影响。结果表明，稀土Ce对合金微观组织、凝固区间和凝固体积收缩有明显的影响。稀土Ce加入量为4%时，Al4.5Cu合金固液两相区间温度为640～600℃，合金晶粒组织细化，圆整；体积收缩率仅为未加Ce时的68.6%。
英文摘要：The effects of adding rare earth cerium on microstructure, solidification range and volume changes of Al4.5Cu alloy in solidification process were researched. Experimental results show that rare earth cerium has remarkable effects on microstructure, solidification and solidification shrinkage interval of the alloy. When the adding of rare earth cerium is about 4 wt%, the range temperature of solid-liquid zone of Al4.5Cu alloy is from 640 ℃ to 600 ℃. The grain of the alloy is refined, round. The volume shrinkage is only 68.6% of that without rare earth cerium.