稀土元素对ZL101合金中α相生长过程的影响  

Effects of Rare Earth Element on Growth Process of α Phase in Semi-solid ZL101 Alloy

作　　者：郑志强[1] 熊新根[1] 陈克燕[1] 占多产[1] 易荣喜[2] 

机构地区：[1]南昌大学机电学院 [2]井冈山学院

出　　处：《特种铸造及有色合金》2008年第3期171-172,共2页Special Casting & Nonferrous Alloys

摘　　要：从热力学和动力学的角度,研究了稀土元素加入到ZL101铝合金后,稀土元素对初生α相生长情况的影响。研究结果表明,由于稀土元素的存在,改变了α相生长过程中α相与液相间的界面条件,促进了α相的球化生长。这种促进效果在稀土加入量为0.5%时效果最佳,且稀土元素的加入都会细化α相晶粒。Effects of rare earth element on growth of primary α phase in ZL101 alloy were described based on thermodynamics and kinetics.The results indicate that the Re can promote the spherodization of α phase due to affecting the interface condition between α phase and liquid phase during growth process,refining the grain size of α phase,and an optimal Re addition with 0.5% can be observed.

关 键 词：半固态 铝硅合金 凝固 稀土 

分 类 号：TG27[金属学及工艺—铸造]