混合稀土与时效时间对ZL201组织和性能的影响  

Influences of Mixed RE and Aging Time on the Properties and Microstructure of ZL201

作　　者：余瑾[1] 张敏[1] 雍文佳[1] 杨天云[1] 杨兵[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《铸造技术》2011年第3期341-343,共3页Foundry Technology

摘　　要：通过对比试验发现:混合稀土加入量对ZL201组织和性能有很大影响,当稀土加入量在0.6%左右时,合金显微组织变的非常细小,硬度最高;但超过这个加入量,合金晶粒开始变粗,硬度也随之降低。时效处理时间虽对铸件的组织和性能有一定程度的影响,但影响不大。It was found through the contrast experiment that the content of mixed RE had a great influence on the properties and microstructure of ZL201.When the contents of mixed RE reach 0.6%,the microstructure of the alloy changed extremely tiny and the hardness also achieves a very high value.But surpassed this contents,the crystal grain of alloy became coarsen,and the hardness reduced along with.The aging treatment had a certain degree influence on the properties and microstructure of the metal mould casting,but the influence was insignificancy.

关 键 词：混合稀土 ZL201合金 显微组织 硬度 时效处理 

分 类 号：TG113[金属学及工艺—物理冶金]