Y_2O_3对45钢表面激光熔覆镍基合金的影响  

Influence of Y_2O_3 on Ni-based at 45 Steel Surface by Laser Cladding

作　　者：雷宇[1] 罗军明[2] 万润根[2] 

机构地区：[1]江西省科学院应用物理研究所,江西南昌330029 [2]南昌航空大学材料与科学工程学院,江西南昌330063

出　　处：《新技术新工艺》2007年第8期64-65,共2页New Technology & New Process

摘　　要：研究了Y2O3对镍基合金激光熔覆层显微组织、相结构以及性能的影响。结果表明加入Y2O3的镍基激光熔覆层显微组织细小均匀,且不出现微裂纹。熔覆层形成的物相有Fe-C,Fe-B和NiCrFe等。与纯镍基熔覆层相比,加入Y2O3的镍基熔覆层显微硬度有较大提高,其耐磨性能比淬火和软氮化后明显提高;加稀土的激光合金化比不加稀土的激光合金化的耐磨性要有所提高。The effects Y2O3 on the microstructure,phase composition,and properties of Ni-based cladding layer are investigated. The results indicate that the microstructure becomes finer and symmetrical,and has not crack by adding Y2O3. The XRD results show that Fe-C,Fe-B and NiCrFe exists in the coatings. The micro hardness of Ni-based cladding layer improves larger by adding Y2O3,and the wear resistance improves greater comparing with quenching and tufftride steel,in the same time,the wear resistance by adding Y2O3,improves than the Ni-based cladding layer without adding Y2O3.

关 键 词：Y2O3 镍基激光熔覆层 显微硬度 耐磨性 

分 类 号：TG156.99[金属学及工艺—热处理] TG174.44[金属学及工艺—金属学]