CAJ | 학술논문

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合金同液两相区间温度为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%.
연구료희토Ce대Al4.5Cu합금미관조직、응고구간화응고과정체적변화적영향.결과표명,희토Ce대합금미관조직、응고구간화응고체적수축유명현적영향.희토Ce가입량위4%시,Al4.5Cu합금동액량상구간온도위640～600℃,합금정립조직세화,원정;체적수축솔부위미가Ce시적68.6%.
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.