热成型工艺对铸造Nd-Fe-B永磁材料显微组织的影响  

The effect of heat deforming process on the structure of Nd-Fe-B permanent magnetic material

作　　者：王玉峰[1] 李文学[1] 任慧平[1] 孙昊[1] 张涛[1] 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《包头钢铁学院学报》2005年第3期248-250,共3页Journal of Baotou University of Iron and Steel Technology

基　　金：内蒙古科技攻关项目(20020202);教育部科学技术研究重点项目(地方02031)

摘　　要：研究了不同变形量和不同变形温度对铸造Nd-Fe-B直接热压变形后的显微组织的影响,以及不同热处理工艺对Nd-Fe-B磁体组织的影响.结果表明,Nd-Fe-B铸锭经过热压变形处理后晶料碎化,富钕相均匀地分布在主相周围,-αFe数量减少;一级热处理后的组织富Nd相分布更均匀.The effect of deformation and heat treatment temperature variation on the microstructure of directly hot pressed Nd-Fe-B permanent magnetic alloy were studled,which shows that grains become finer and the amount of α-Fe phase decreases after heat treatments. And Nd-enfiehed phase particles could be found scattering around the main phase grain in uniform distribution after the first grade heat treatment.

关 键 词：ND-FE-B 热变形 热处理 显微组织 

分 类 号：TG132.272[一般工业技术—材料科学与工程]