摘要
利用扫描电镜和透射电镜观察、分析了高碳Nb Ti V系堆焊层中颗粒碳化物与固溶体间的界面 (Carbide/SolidSolution简称C/S界面 )结构 .表明 :C/S界面洁净 ,无第 3种反应物的显微夹层 ,两相错配度δ =(6 .1～ 8.3) % ,界面位向关系为 :(0 0 2 ) α Fe/ / (2 2 0 ) (NbTiV)C;对MM2 0 0上的磨损试件观察亦表明 ,其C/S界面结合强度高 ,碳化物的脱落极少 ,堆焊层耐磨性超过美国的MG70
The C/S interface (interface between particulate carbide and solid solution) was investigated in Fe based high carbon Nb-Ti-V alloyed surface welding layer by means of SEM and TEM. It is indicated that the C/S interface was clean and free from other reactants, mismatch δ between the two crystals was 6.1～8.3%, and there existed a crystal orientation relationship on the C/S interface: (002)_(α-Fe) // (220)_((NbTiV)C);The testing on the MM200 type wear machine demonstrates that the two phase strongly binds each other at the C/S interface, which preventes the fall-off of carbides and provides the surface welding layer with better wear resistance than that of American MG700 surface welding layer.
出处
《山东大学学报（工学版）》
CAS
2005年第1期4-8,共5页
Journal of Shandong University（Engineering Science）
基金
山东省科技发展计划项目 (鲁科计字 [2 0 0 2 ] 0 2 2 0 2 0 10 3 )
关键词
碳化物
C/S界面
堆焊层
位向关系
carbide
C/S interface
surfaced layer
orientation relationship
