NdFeB合金铸锭组织及均匀化退火  

Study on the Microstructures of NdFeB Alloy Ingot and Homogeneous Annealing

作　　者：闫俊萍[1] 任惠平[1] 王玉峰[1] 

机构地区：[1]内蒙古科技大学材料学院,内蒙古包头014010

出　　处：《稀土》2004年第1期70-72,共3页Chinese Rare Earths

基　　金：内蒙古科技攻关项目(20020202)

摘　　要：研究了NdFeB合金的铸锭组织,并对NdFeB合金进行了均匀化退火。研究表明,NdFeB铸锭中Nd2Fe14B相以片状晶方式生长,经退火后,α-Fe基本消除,片状晶变为等轴晶并粗化。X-射线衍射结果显示,经退火处理后,Nd2Fe14B在某些方向上的各向异性更为明显。The microstructure of NdFeB alloy ingot has been investigated. The homogeneous annealing proceeded. The results showed that the growth of the Nd_2Fe_(14)B grains during solidification was in sheet-like pattern. After annealing, the α-Fe essentially removed. The sheet-like grains were tended to be equiaxial and the grains size was apparently coarsened. X-ray study showed that the anisotropy of Nd_2Fe_(14)B at some grain direction was more obvious after annealing.

关 键 词：NDFEB 合金 铸态 组织 均匀化退火 

分 类 号：TM273[一般工业技术—材料科学与工程]