镍基单晶高温合金微观结构研究  

Study on Microstructure of Ni-based Single Crystal Super-alloy

作　　者：庞通[1,2] 

机构地区：[1]广西大学,广西南宁530004 [2]广西机电职业技术学院,广西南宁530007

出　　处：《铸造技术》2014年第7期1417-1419,共3页Foundry Technology

摘　　要：以Ni-15Cr-3.5B非晶箔带为中间层,采用瞬态液相连接工艺对镍基单晶高温合金进行连接。采用电子扫描显微镜、光学显微镜、透射电子显微镜对液相连接接头的组织形貌进行分析观察,利用EBSD(电子散射衍射仪)对连接区和基体的结晶取向进行观测。结果表明,接头主要由基体金属区、基体/中间层金属界面扩散区和连接区组成,扩散区的主要组织为M3B2细微颗粒;连接区则是MB+γ′和M23B6+γ′的共晶相。Taking Ni-15Cr-3.5B amorphous foil as intermediate layer, the nickel-based single crystal super-alloy were connected by transient liquid phase process. The microstructure and crystallographic orientation of joint were observed using SEM, OM, TEM and EBSD. The results show that the joint mainly consists of matrix metal zone, matrix/interface diffusion zone of interlayer metal and joining zone, the mainly structure of diffusion zone is M3b2particulate matter, the joining zone is the eutectic phase of MB＋γ’ and M23B6＋γ’.

关 键 词：TLP连接 组织结构 结晶学取向 单晶合金 

分 类 号：TG132.3[一般工业技术—材料科学与工程]